./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/s3_srvr_1a.BV.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_srvr_1a.BV.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b0b2d978b2f3873db9b988022a041d2d18a2f859 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_srvr_1a.BV.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b0b2d978b2f3873db9b988022a041d2d18a2f859 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:07:54,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:07:54,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:07:54,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:07:54,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:07:54,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:07:54,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:07:54,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:07:54,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:07:54,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:07:54,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:07:54,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:07:54,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:07:54,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:07:54,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:07:54,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:07:54,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:07:54,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:07:54,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:07:54,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:07:54,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:07:54,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:07:54,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:07:54,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:07:54,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:07:54,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:07:54,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:07:54,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:07:55,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:07:55,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:07:55,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:07:55,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:07:55,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:07:55,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:07:55,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:07:55,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:07:55,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:07:55,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:07:55,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:07:55,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:07:55,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:07:55,010 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 03:07:55,040 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:07:55,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:07:55,041 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:07:55,042 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:07:55,042 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:07:55,042 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:07:55,042 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 03:07:55,043 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:07:55,043 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:07:55,043 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 03:07:55,043 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 03:07:55,044 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:07:55,044 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 03:07:55,044 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 03:07:55,044 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 03:07:55,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:07:55,045 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:07:55,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:07:55,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:07:55,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:07:55,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:07:55,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:07:55,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:07:55,047 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:07:55,047 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:07:55,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:07:55,047 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:07:55,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:07:55,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:07:55,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:07:55,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:07:55,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:07:55,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:07:55,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:07:55,049 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 03:07:55,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 03:07:55,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:07:55,049 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:07:55,050 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:07:55,050 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0b2d978b2f3873db9b988022a041d2d18a2f859 [2021-10-16 03:07:55,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:07:55,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:07:55,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:07:55,320 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:07:55,321 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:07:55,322 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/bitvector/s3_srvr_1a.BV.c.cil.c [2021-10-16 03:07:55,387 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/data/e67aa298b/0d5c548ac4a148798d218aa0db607868/FLAG66209af23 [2021-10-16 03:07:55,917 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:07:55,918 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/sv-benchmarks/c/bitvector/s3_srvr_1a.BV.c.cil.c [2021-10-16 03:07:55,932 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/data/e67aa298b/0d5c548ac4a148798d218aa0db607868/FLAG66209af23 [2021-10-16 03:07:56,255 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/data/e67aa298b/0d5c548ac4a148798d218aa0db607868 [2021-10-16 03:07:56,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:07:56,260 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:07:56,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:07:56,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:07:56,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:07:56,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:07:56" (1/1) ... [2021-10-16 03:07:56,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8138780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:07:56, skipping insertion in model container [2021-10-16 03:07:56,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:07:56" (1/1) ... [2021-10-16 03:07:56,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:07:56,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:07:56,599 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/sv-benchmarks/c/bitvector/s3_srvr_1a.BV.c.cil.c[44644,44657] [2021-10-16 03:07:56,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:07:56,616 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:07:56,672 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/sv-benchmarks/c/bitvector/s3_srvr_1a.BV.c.cil.c[44644,44657] [2021-10-16 03:07:56,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:07:56,692 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:07:56,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:07:56 WrapperNode [2021-10-16 03:07:56,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:07:56,706 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:07:56,706 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:07:56,706 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:07:56,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:07:56" (1/1) ... [2021-10-16 03:07:56,736 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:07:56" (1/1) ... [2021-10-16 03:07:56,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:07:56,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:07:56,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:07:56,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:07:56,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:07:56" (1/1) ... [2021-10-16 03:07:56,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:07:56" (1/1) ... [2021-10-16 03:07:56,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:07:56" (1/1) ... [2021-10-16 03:07:56,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:07:56" (1/1) ... [2021-10-16 03:07:56,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:07:56" (1/1) ... [2021-10-16 03:07:56,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:07:56" (1/1) ... [2021-10-16 03:07:56,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:07:56" (1/1) ... [2021-10-16 03:07:56,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:07:56,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:07:56,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:07:56,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:07:56,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:07:56" (1/1) ... [2021-10-16 03:07:56,842 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:07:56,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:07:56,865 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:07:56,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:07:56,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 03:07:56,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:07:56,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:07:56,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:07:57,045 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-16 03:07:57,651 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-16 03:07:57,652 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-16 03:07:57,974 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:07:57,974 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 03:07:57,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:07:57 BoogieIcfgContainer [2021-10-16 03:07:57,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:07:57,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:07:57,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:07:57,985 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:07:57,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:07:56" (1/3) ... [2021-10-16 03:07:57,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7ceece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:07:57, skipping insertion in model container [2021-10-16 03:07:57,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:07:56" (2/3) ... [2021-10-16 03:07:57,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7ceece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:07:57, skipping insertion in model container [2021-10-16 03:07:57,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:07:57" (3/3) ... [2021-10-16 03:07:57,989 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1a.BV.c.cil.c [2021-10-16 03:07:57,994 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:07:57,994 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:07:58,043 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:07:58,051 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 03:07:58,051 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:07:58,069 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 103 states have (on average 1.7766990291262137) internal successors, (183), 104 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:07:58,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-16 03:07:58,078 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:07:58,079 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:07:58,079 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:07:58,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:07:58,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1632319463, now seen corresponding path program 1 times [2021-10-16 03:07:58,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:07:58,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791871672] [2021-10-16 03:07:58,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:07:58,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:07:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:07:58,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:07:58,315 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:07:58,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791871672] [2021-10-16 03:07:58,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791871672] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:07:58,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:07:58,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 03:07:58,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332146450] [2021-10-16 03:07:58,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:07:58,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:07:58,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:07:58,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:07:58,343 INFO L87 Difference]: Start difference. First operand has 105 states, 103 states have (on average 1.7766990291262137) internal successors, (183), 104 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:07:58,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:07:58,577 INFO L93 Difference]: Finished difference Result 229 states and 398 transitions. [2021-10-16 03:07:58,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:07:58,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-16 03:07:58,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:07:58,595 INFO L225 Difference]: With dead ends: 229 [2021-10-16 03:07:58,595 INFO L226 Difference]: Without dead ends: 120 [2021-10-16 03:07:58,599 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:07:58,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-10-16 03:07:58,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2021-10-16 03:07:58,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.4871794871794872) internal successors, (174), 117 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:07:58,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 174 transitions. [2021-10-16 03:07:58,675 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 174 transitions. Word has length 39 [2021-10-16 03:07:58,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:07:58,675 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 174 transitions. [2021-10-16 03:07:58,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:07:58,676 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 174 transitions. [2021-10-16 03:07:58,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-16 03:07:58,681 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:07:58,682 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:07:58,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 03:07:58,682 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:07:58,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:07:58,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1623448682, now seen corresponding path program 1 times [2021-10-16 03:07:58,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:07:58,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598135681] [2021-10-16 03:07:58,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:07:58,688 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:07:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:07:58,790 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:07:58,790 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:07:58,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598135681] [2021-10-16 03:07:58,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598135681] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:07:58,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:07:58,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:07:58,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177551515] [2021-10-16 03:07:58,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:07:58,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:07:58,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:07:58,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:07:58,795 INFO L87 Difference]: Start difference. First operand 118 states and 174 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:07:58,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:07:58,980 INFO L93 Difference]: Finished difference Result 255 states and 382 transitions. [2021-10-16 03:07:58,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:07:58,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-10-16 03:07:58,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:07:58,988 INFO L225 Difference]: With dead ends: 255 [2021-10-16 03:07:58,989 INFO L226 Difference]: Without dead ends: 139 [2021-10-16 03:07:58,991 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:07:58,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-10-16 03:07:59,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2021-10-16 03:07:59,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.4411764705882353) internal successors, (196), 136 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:07:59,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 196 transitions. [2021-10-16 03:07:59,020 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 196 transitions. Word has length 53 [2021-10-16 03:07:59,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:07:59,021 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 196 transitions. [2021-10-16 03:07:59,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:07:59,022 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 196 transitions. [2021-10-16 03:07:59,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-16 03:07:59,027 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:07:59,028 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:07:59,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 03:07:59,029 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:07:59,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:07:59,031 INFO L82 PathProgramCache]: Analyzing trace with hash -696226375, now seen corresponding path program 1 times [2021-10-16 03:07:59,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:07:59,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001201613] [2021-10-16 03:07:59,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:07:59,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:07:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:07:59,190 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-16 03:07:59,190 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:07:59,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001201613] [2021-10-16 03:07:59,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001201613] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:07:59,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:07:59,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 03:07:59,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746440246] [2021-10-16 03:07:59,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:07:59,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:07:59,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:07:59,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:07:59,194 INFO L87 Difference]: Start difference. First operand 137 states and 196 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:07:59,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:07:59,418 INFO L93 Difference]: Finished difference Result 316 states and 469 transitions. [2021-10-16 03:07:59,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:07:59,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-10-16 03:07:59,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:07:59,422 INFO L225 Difference]: With dead ends: 316 [2021-10-16 03:07:59,422 INFO L226 Difference]: Without dead ends: 181 [2021-10-16 03:07:59,423 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:07:59,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-10-16 03:07:59,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 175. [2021-10-16 03:07:59,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.367816091954023) internal successors, (238), 174 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:07:59,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 238 transitions. [2021-10-16 03:07:59,436 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 238 transitions. Word has length 70 [2021-10-16 03:07:59,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:07:59,437 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 238 transitions. [2021-10-16 03:07:59,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:07:59,437 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 238 transitions. [2021-10-16 03:07:59,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-16 03:07:59,441 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:07:59,441 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:07:59,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 03:07:59,442 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:07:59,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:07:59,443 INFO L82 PathProgramCache]: Analyzing trace with hash 105717542, now seen corresponding path program 1 times [2021-10-16 03:07:59,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:07:59,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367407793] [2021-10-16 03:07:59,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:07:59,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:07:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:07:59,558 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-16 03:07:59,560 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:07:59,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367407793] [2021-10-16 03:07:59,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367407793] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:07:59,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:07:59,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:07:59,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778187112] [2021-10-16 03:07:59,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:07:59,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:07:59,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:07:59,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:07:59,565 INFO L87 Difference]: Start difference. First operand 175 states and 238 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:07:59,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:07:59,731 INFO L93 Difference]: Finished difference Result 381 states and 532 transitions. [2021-10-16 03:07:59,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:07:59,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-10-16 03:07:59,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:07:59,737 INFO L225 Difference]: With dead ends: 381 [2021-10-16 03:07:59,737 INFO L226 Difference]: Without dead ends: 208 [2021-10-16 03:07:59,741 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:07:59,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-16 03:07:59,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 198. [2021-10-16 03:07:59,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.3401015228426396) internal successors, (264), 197 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:07:59,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 264 transitions. [2021-10-16 03:07:59,765 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 264 transitions. Word has length 89 [2021-10-16 03:07:59,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:07:59,769 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 264 transitions. [2021-10-16 03:07:59,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:07:59,770 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 264 transitions. [2021-10-16 03:07:59,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-16 03:07:59,777 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:07:59,777 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:07:59,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 03:07:59,778 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:07:59,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:07:59,779 INFO L82 PathProgramCache]: Analyzing trace with hash 2131433571, now seen corresponding path program 1 times [2021-10-16 03:07:59,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:07:59,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385845247] [2021-10-16 03:07:59,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:07:59,781 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:07:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:07:59,934 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:07:59,935 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:07:59,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385845247] [2021-10-16 03:07:59,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385845247] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 03:07:59,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88144177] [2021-10-16 03:07:59,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:07:59,936 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:07:59,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:07:59,938 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:07:59,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 03:08:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:00,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 03:08:00,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:08:00,510 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:08:00,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:08:00,865 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-10-16 03:08:00,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88144177] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 03:08:00,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-16 03:08:00,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 6 [2021-10-16 03:08:00,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981616774] [2021-10-16 03:08:00,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:08:00,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:08:00,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:08:00,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-16 03:08:00,871 INFO L87 Difference]: Start difference. First operand 198 states and 264 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:00,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:00,898 INFO L93 Difference]: Finished difference Result 393 states and 525 transitions. [2021-10-16 03:08:00,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:08:00,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-10-16 03:08:00,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:00,903 INFO L225 Difference]: With dead ends: 393 [2021-10-16 03:08:00,903 INFO L226 Difference]: Without dead ends: 391 [2021-10-16 03:08:00,904 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.4ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-16 03:08:00,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-10-16 03:08:00,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 390. [2021-10-16 03:08:00,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 1.339331619537275) internal successors, (521), 389 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:00,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 521 transitions. [2021-10-16 03:08:00,927 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 521 transitions. Word has length 108 [2021-10-16 03:08:00,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:00,932 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 521 transitions. [2021-10-16 03:08:00,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:00,932 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 521 transitions. [2021-10-16 03:08:00,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-10-16 03:08:00,940 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:00,941 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:00,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 03:08:01,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:08:01,154 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:08:01,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:01,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1481344401, now seen corresponding path program 1 times [2021-10-16 03:08:01,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:08:01,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138314177] [2021-10-16 03:08:01,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:01,156 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:08:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:01,257 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-16 03:08:01,257 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:08:01,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138314177] [2021-10-16 03:08:01,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138314177] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:01,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:08:01,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:08:01,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172572287] [2021-10-16 03:08:01,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:08:01,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:08:01,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:08:01,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:01,267 INFO L87 Difference]: Start difference. First operand 390 states and 521 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:01,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:01,425 INFO L93 Difference]: Finished difference Result 876 states and 1214 transitions. [2021-10-16 03:08:01,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:08:01,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2021-10-16 03:08:01,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:01,429 INFO L225 Difference]: With dead ends: 876 [2021-10-16 03:08:01,430 INFO L226 Difference]: Without dead ends: 488 [2021-10-16 03:08:01,430 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:01,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-10-16 03:08:01,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 468. [2021-10-16 03:08:01,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 467 states have (on average 1.3083511777301928) internal successors, (611), 467 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:01,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 611 transitions. [2021-10-16 03:08:01,445 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 611 transitions. Word has length 142 [2021-10-16 03:08:01,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:01,446 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 611 transitions. [2021-10-16 03:08:01,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:01,446 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 611 transitions. [2021-10-16 03:08:01,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-10-16 03:08:01,448 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:01,449 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:01,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-16 03:08:01,449 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:08:01,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:01,450 INFO L82 PathProgramCache]: Analyzing trace with hash 764979821, now seen corresponding path program 1 times [2021-10-16 03:08:01,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:08:01,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052268809] [2021-10-16 03:08:01,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:01,450 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:08:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:01,509 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-10-16 03:08:01,510 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:08:01,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052268809] [2021-10-16 03:08:01,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052268809] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:01,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:08:01,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:08:01,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907637530] [2021-10-16 03:08:01,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:08:01,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:08:01,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:08:01,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:01,512 INFO L87 Difference]: Start difference. First operand 468 states and 611 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:01,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:01,641 INFO L93 Difference]: Finished difference Result 998 states and 1336 transitions. [2021-10-16 03:08:01,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:08:01,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2021-10-16 03:08:01,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:01,646 INFO L225 Difference]: With dead ends: 998 [2021-10-16 03:08:01,646 INFO L226 Difference]: Without dead ends: 532 [2021-10-16 03:08:01,647 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:01,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-10-16 03:08:01,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 518. [2021-10-16 03:08:01,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 517 states have (on average 1.2901353965183753) internal successors, (667), 517 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:01,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 667 transitions. [2021-10-16 03:08:01,664 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 667 transitions. Word has length 147 [2021-10-16 03:08:01,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:01,664 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 667 transitions. [2021-10-16 03:08:01,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:01,665 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 667 transitions. [2021-10-16 03:08:01,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-10-16 03:08:01,667 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:01,668 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:01,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-16 03:08:01,668 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:08:01,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:01,669 INFO L82 PathProgramCache]: Analyzing trace with hash -806726266, now seen corresponding path program 1 times [2021-10-16 03:08:01,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:08:01,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751227466] [2021-10-16 03:08:01,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:01,670 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:08:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:01,723 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-10-16 03:08:01,724 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:08:01,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751227466] [2021-10-16 03:08:01,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751227466] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:01,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:08:01,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:08:01,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203625802] [2021-10-16 03:08:01,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:08:01,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:08:01,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:08:01,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:01,727 INFO L87 Difference]: Start difference. First operand 518 states and 667 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:01,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:01,938 INFO L93 Difference]: Finished difference Result 1142 states and 1517 transitions. [2021-10-16 03:08:01,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:08:01,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2021-10-16 03:08:01,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:01,943 INFO L225 Difference]: With dead ends: 1142 [2021-10-16 03:08:01,944 INFO L226 Difference]: Without dead ends: 624 [2021-10-16 03:08:01,945 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:01,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-10-16 03:08:01,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 612. [2021-10-16 03:08:01,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 611 states have (on average 1.3436988543371522) internal successors, (821), 611 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:01,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 821 transitions. [2021-10-16 03:08:01,968 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 821 transitions. Word has length 152 [2021-10-16 03:08:01,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:01,968 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 821 transitions. [2021-10-16 03:08:01,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:01,969 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 821 transitions. [2021-10-16 03:08:01,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-10-16 03:08:01,972 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:01,972 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:01,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-16 03:08:01,973 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:08:01,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:01,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1037992224, now seen corresponding path program 1 times [2021-10-16 03:08:01,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:08:01,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896230716] [2021-10-16 03:08:01,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:01,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:08:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:02,025 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-10-16 03:08:02,026 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:08:02,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896230716] [2021-10-16 03:08:02,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896230716] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:02,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:08:02,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:08:02,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614823155] [2021-10-16 03:08:02,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:08:02,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:08:02,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:08:02,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:02,029 INFO L87 Difference]: Start difference. First operand 612 states and 821 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:02,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:02,211 INFO L93 Difference]: Finished difference Result 1280 states and 1738 transitions. [2021-10-16 03:08:02,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:08:02,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-10-16 03:08:02,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:02,216 INFO L225 Difference]: With dead ends: 1280 [2021-10-16 03:08:02,217 INFO L226 Difference]: Without dead ends: 670 [2021-10-16 03:08:02,218 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:02,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-10-16 03:08:02,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 666. [2021-10-16 03:08:02,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 665 states have (on average 1.324812030075188) internal successors, (881), 665 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:02,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 881 transitions. [2021-10-16 03:08:02,241 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 881 transitions. Word has length 169 [2021-10-16 03:08:02,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:02,241 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 881 transitions. [2021-10-16 03:08:02,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:02,242 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 881 transitions. [2021-10-16 03:08:02,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-10-16 03:08:02,245 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:02,247 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:02,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-16 03:08:02,247 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:08:02,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:02,248 INFO L82 PathProgramCache]: Analyzing trace with hash -522321712, now seen corresponding path program 1 times [2021-10-16 03:08:02,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:08:02,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846713435] [2021-10-16 03:08:02,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:02,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:08:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:02,300 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-10-16 03:08:02,300 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:08:02,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846713435] [2021-10-16 03:08:02,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846713435] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:02,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:08:02,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:08:02,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794181585] [2021-10-16 03:08:02,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:08:02,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:08:02,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:08:02,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:02,304 INFO L87 Difference]: Start difference. First operand 666 states and 881 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:02,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:02,479 INFO L93 Difference]: Finished difference Result 1388 states and 1862 transitions. [2021-10-16 03:08:02,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:08:02,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2021-10-16 03:08:02,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:02,485 INFO L225 Difference]: With dead ends: 1388 [2021-10-16 03:08:02,485 INFO L226 Difference]: Without dead ends: 724 [2021-10-16 03:08:02,487 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:02,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2021-10-16 03:08:02,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 724. [2021-10-16 03:08:02,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 723 states have (on average 1.3070539419087137) internal successors, (945), 723 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:02,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 945 transitions. [2021-10-16 03:08:02,511 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 945 transitions. Word has length 173 [2021-10-16 03:08:02,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:02,512 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 945 transitions. [2021-10-16 03:08:02,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:02,513 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 945 transitions. [2021-10-16 03:08:02,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-10-16 03:08:02,516 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:02,516 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:02,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-16 03:08:02,517 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:08:02,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:02,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1537114542, now seen corresponding path program 1 times [2021-10-16 03:08:02,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:08:02,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245550879] [2021-10-16 03:08:02,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:02,519 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:08:02,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:02,584 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 303 proven. 25 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-10-16 03:08:02,584 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:08:02,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245550879] [2021-10-16 03:08:02,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245550879] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 03:08:02,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674292760] [2021-10-16 03:08:02,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:02,585 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:08:02,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:08:02,590 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:08:02,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-16 03:08:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:02,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:08:02,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:08:03,510 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-10-16 03:08:03,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:08:04,062 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-10-16 03:08:04,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674292760] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:04,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-16 03:08:04,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [4] total 7 [2021-10-16 03:08:04,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45133533] [2021-10-16 03:08:04,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 03:08:04,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:08:04,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 03:08:04,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-16 03:08:04,075 INFO L87 Difference]: Start difference. First operand 724 states and 945 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:04,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:04,456 INFO L93 Difference]: Finished difference Result 1574 states and 2111 transitions. [2021-10-16 03:08:04,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:08:04,457 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 200 [2021-10-16 03:08:04,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:04,463 INFO L225 Difference]: With dead ends: 1574 [2021-10-16 03:08:04,463 INFO L226 Difference]: Without dead ends: 770 [2021-10-16 03:08:04,465 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 21.8ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-16 03:08:04,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2021-10-16 03:08:04,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 745. [2021-10-16 03:08:04,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 744 states have (on average 1.2943548387096775) internal successors, (963), 744 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:04,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 963 transitions. [2021-10-16 03:08:04,492 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 963 transitions. Word has length 200 [2021-10-16 03:08:04,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:04,493 INFO L470 AbstractCegarLoop]: Abstraction has 745 states and 963 transitions. [2021-10-16 03:08:04,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:04,494 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 963 transitions. [2021-10-16 03:08:04,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-10-16 03:08:04,498 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:04,498 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:04,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-16 03:08:04,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-16 03:08:04,714 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:08:04,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:04,714 INFO L82 PathProgramCache]: Analyzing trace with hash 221507132, now seen corresponding path program 1 times [2021-10-16 03:08:04,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:08:04,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346642530] [2021-10-16 03:08:04,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:04,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:08:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:04,793 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 442 proven. 25 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-10-16 03:08:04,794 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:08:04,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346642530] [2021-10-16 03:08:04,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346642530] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 03:08:04,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295966825] [2021-10-16 03:08:04,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:04,795 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:08:04,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:08:04,796 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:08:04,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-16 03:08:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:05,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:08:05,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:08:05,795 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 442 proven. 25 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-10-16 03:08:05,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:08:06,373 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 442 proven. 25 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-10-16 03:08:06,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295966825] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:08:06,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [225253295] [2021-10-16 03:08:06,406 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2021-10-16 03:08:06,407 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 03:08:06,415 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 03:08:06,422 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 03:08:06,423 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 03:08:06,851 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:08:06,861 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:08:06,862 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:08:06,862 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 03:08:06,864 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:08:06,864 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:08:06,865 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 03:08:06,878 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 319 [2021-10-16 03:08:06,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:08:06,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:08:06,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:08:06,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-16 03:08:06,977 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:08:06,978 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 03:08:06,979 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:08:06,979 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 03:08:06,980 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 03:08:06,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:08:07,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:08:07,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:08:07,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-16 03:08:07,012 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:08:07,013 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 03:08:07,013 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:08:07,014 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 03:08:07,014 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-16 03:08:07,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:08:07,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:08:07,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:08:07,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-16 03:08:07,047 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:08:07,048 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 03:08:07,048 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:08:07,054 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 03:08:07,054 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-16 03:08:07,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:08:07,147 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:08:07,196 INFO L180 QuantifierPusher]: treesize reduction 18, result has 98.0 percent of original size [2021-10-16 03:08:07,221 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 879 [2021-10-16 03:08:07,222 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-10-16 03:08:07,223 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:888, output treesize:879 [2021-10-16 03:08:07,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-16 03:08:07,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-16 03:08:07,438 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_18| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 03:08:07,441 INFO L168 Benchmark]: Toolchain (without parser) took 11180.83 ms. Allocated memory was 90.2 MB in the beginning and 159.4 MB in the end (delta: 69.2 MB). Free memory was 50.8 MB in the beginning and 49.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 71.0 MB. Max. memory is 16.1 GB. [2021-10-16 03:08:07,442 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 90.2 MB. Free memory is still 67.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:08:07,442 INFO L168 Benchmark]: CACSL2BoogieTranslator took 440.31 ms. Allocated memory is still 90.2 MB. Free memory was 50.5 MB in the beginning and 60.5 MB in the end (delta: -10.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-16 03:08:07,443 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.98 ms. Allocated memory is still 90.2 MB. Free memory was 60.5 MB in the beginning and 57.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:08:07,443 INFO L168 Benchmark]: Boogie Preprocessor took 50.17 ms. Allocated memory is still 90.2 MB. Free memory was 57.5 MB in the beginning and 55.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:08:07,445 INFO L168 Benchmark]: RCFGBuilder took 1147.97 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 55.4 MB in the beginning and 62.3 MB in the end (delta: -6.9 MB). Peak memory consumption was 30.8 MB. Max. memory is 16.1 GB. [2021-10-16 03:08:07,446 INFO L168 Benchmark]: TraceAbstraction took 9459.55 ms. Allocated memory was 109.1 MB in the beginning and 159.4 MB in the end (delta: 50.3 MB). Free memory was 61.7 MB in the beginning and 49.3 MB in the end (delta: 12.4 MB). Peak memory consumption was 63.3 MB. Max. memory is 16.1 GB. [2021-10-16 03:08:07,448 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 90.2 MB. Free memory is still 67.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 440.31 ms. Allocated memory is still 90.2 MB. Free memory was 50.5 MB in the beginning and 60.5 MB in the end (delta: -10.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 72.98 ms. Allocated memory is still 90.2 MB. Free memory was 60.5 MB in the beginning and 57.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.17 ms. Allocated memory is still 90.2 MB. Free memory was 57.5 MB in the beginning and 55.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1147.97 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 55.4 MB in the beginning and 62.3 MB in the end (delta: -6.9 MB). Peak memory consumption was 30.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9459.55 ms. Allocated memory was 109.1 MB in the beginning and 159.4 MB in the end (delta: 50.3 MB). Free memory was 61.7 MB in the beginning and 49.3 MB in the end (delta: 12.4 MB). Peak memory consumption was 63.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_18| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_18|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 03:08:07,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:08:10,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:08:10,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:08:10,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:08:10,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:08:10,264 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:08:10,266 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:08:10,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:08:10,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:08:10,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:08:10,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:08:10,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:08:10,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:08:10,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:08:10,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:08:10,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:08:10,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:08:10,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:08:10,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:08:10,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:08:10,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:08:10,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:08:10,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:08:10,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:08:10,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:08:10,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:08:10,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:08:10,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:08:10,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:08:10,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:08:10,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:08:10,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:08:10,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:08:10,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:08:10,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:08:10,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:08:10,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:08:10,311 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:08:10,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:08:10,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:08:10,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:08:10,315 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 03:08:10,348 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:08:10,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:08:10,350 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:08:10,350 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:08:10,350 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:08:10,350 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:08:10,350 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:08:10,351 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:08:10,351 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:08:10,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:08:10,352 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:08:10,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:08:10,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:08:10,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:08:10,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:08:10,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:08:10,353 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:08:10,354 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 03:08:10,354 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 03:08:10,354 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:08:10,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:08:10,355 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:08:10,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:08:10,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:08:10,355 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 03:08:10,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:08:10,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:08:10,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:08:10,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:08:10,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:08:10,357 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 03:08:10,357 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 03:08:10,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:08:10,357 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:08:10,358 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:08:10,358 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0b2d978b2f3873db9b988022a041d2d18a2f859 [2021-10-16 03:08:10,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:08:10,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:08:10,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:08:10,815 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:08:10,816 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:08:10,817 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/bitvector/s3_srvr_1a.BV.c.cil.c [2021-10-16 03:08:10,899 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/data/2b44914e2/4560d5cf6c924133b79e3db0f88a7db5/FLAG47f7daab0 [2021-10-16 03:08:11,544 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:08:11,545 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/sv-benchmarks/c/bitvector/s3_srvr_1a.BV.c.cil.c [2021-10-16 03:08:11,559 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/data/2b44914e2/4560d5cf6c924133b79e3db0f88a7db5/FLAG47f7daab0 [2021-10-16 03:08:11,880 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/data/2b44914e2/4560d5cf6c924133b79e3db0f88a7db5 [2021-10-16 03:08:11,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:08:11,885 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:08:11,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:08:11,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:08:11,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:08:11,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:08:11" (1/1) ... [2021-10-16 03:08:11,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fc3ca79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:11, skipping insertion in model container [2021-10-16 03:08:11,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:08:11" (1/1) ... [2021-10-16 03:08:11,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:08:11,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:08:12,232 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/sv-benchmarks/c/bitvector/s3_srvr_1a.BV.c.cil.c[44644,44657] [2021-10-16 03:08:12,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:08:12,276 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:08:12,410 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/sv-benchmarks/c/bitvector/s3_srvr_1a.BV.c.cil.c[44644,44657] [2021-10-16 03:08:12,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:08:12,427 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:08:12,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:12 WrapperNode [2021-10-16 03:08:12,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:08:12,430 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:08:12,430 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:08:12,430 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:08:12,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:12" (1/1) ... [2021-10-16 03:08:12,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:12" (1/1) ... [2021-10-16 03:08:12,488 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:08:12,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:08:12,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:08:12,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:08:12,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:12" (1/1) ... [2021-10-16 03:08:12,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:12" (1/1) ... [2021-10-16 03:08:12,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:12" (1/1) ... [2021-10-16 03:08:12,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:12" (1/1) ... [2021-10-16 03:08:12,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:12" (1/1) ... [2021-10-16 03:08:12,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:12" (1/1) ... [2021-10-16 03:08:12,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:12" (1/1) ... [2021-10-16 03:08:12,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:08:12,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:08:12,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:08:12,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:08:12,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:12" (1/1) ... [2021-10-16 03:08:12,563 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:08:12,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:08:12,591 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:08:12,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:08:12,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 03:08:12,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:08:12,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:08:12,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:08:12,864 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-16 03:08:13,516 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-16 03:08:13,516 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-16 03:08:13,526 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:08:13,527 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 03:08:13,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:08:13 BoogieIcfgContainer [2021-10-16 03:08:13,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:08:13,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:08:13,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:08:13,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:08:13,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:08:11" (1/3) ... [2021-10-16 03:08:13,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c40af3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:08:13, skipping insertion in model container [2021-10-16 03:08:13,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:12" (2/3) ... [2021-10-16 03:08:13,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c40af3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:08:13, skipping insertion in model container [2021-10-16 03:08:13,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:08:13" (3/3) ... [2021-10-16 03:08:13,553 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1a.BV.c.cil.c [2021-10-16 03:08:13,560 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:08:13,560 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:08:13,647 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:08:13,654 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 03:08:13,655 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:08:13,682 INFO L276 IsEmpty]: Start isEmpty. Operand has 140 states, 138 states have (on average 1.7318840579710144) internal successors, (239), 139 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:13,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-16 03:08:13,695 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:13,696 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:13,696 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:08:13,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:13,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1632000041, now seen corresponding path program 1 times [2021-10-16 03:08:13,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:08:13,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101005917] [2021-10-16 03:08:13,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:13,720 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:08:13,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:08:13,724 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:08:13,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 03:08:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:13,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:08:13,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:08:14,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:08:14,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:08:14,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:08:14,466 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:08:14,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101005917] [2021-10-16 03:08:14,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1101005917] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:14,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:08:14,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:08:14,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871346629] [2021-10-16 03:08:14,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:08:14,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:08:14,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:08:14,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:14,514 INFO L87 Difference]: Start difference. First operand has 140 states, 138 states have (on average 1.7318840579710144) internal successors, (239), 139 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:14,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:14,787 INFO L93 Difference]: Finished difference Result 301 states and 513 transitions. [2021-10-16 03:08:14,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:08:14,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-16 03:08:14,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:14,808 INFO L225 Difference]: With dead ends: 301 [2021-10-16 03:08:14,809 INFO L226 Difference]: Without dead ends: 147 [2021-10-16 03:08:14,814 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:14,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-10-16 03:08:14,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 144. [2021-10-16 03:08:14,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.5244755244755244) internal successors, (218), 143 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:14,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 218 transitions. [2021-10-16 03:08:14,887 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 218 transitions. Word has length 44 [2021-10-16 03:08:14,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:14,888 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 218 transitions. [2021-10-16 03:08:14,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:14,888 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 218 transitions. [2021-10-16 03:08:14,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-16 03:08:14,897 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:14,897 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:14,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 03:08:15,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:08:15,098 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:08:15,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:15,109 INFO L82 PathProgramCache]: Analyzing trace with hash -193922812, now seen corresponding path program 1 times [2021-10-16 03:08:15,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:08:15,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102575956] [2021-10-16 03:08:15,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:15,113 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:08:15,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:08:15,115 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:08:15,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 03:08:15,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:15,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:08:15,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:08:15,401 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:08:15,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:08:15,565 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:08:15,565 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:08:15,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102575956] [2021-10-16 03:08:15,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102575956] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:15,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:08:15,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:08:15,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046546744] [2021-10-16 03:08:15,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:08:15,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:08:15,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:08:15,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:15,573 INFO L87 Difference]: Start difference. First operand 144 states and 218 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:15,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:15,738 INFO L93 Difference]: Finished difference Result 305 states and 468 transitions. [2021-10-16 03:08:15,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:08:15,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-10-16 03:08:15,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:15,744 INFO L225 Difference]: With dead ends: 305 [2021-10-16 03:08:15,745 INFO L226 Difference]: Without dead ends: 169 [2021-10-16 03:08:15,750 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:15,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-10-16 03:08:15,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 165. [2021-10-16 03:08:15,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.4878048780487805) internal successors, (244), 164 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:15,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 244 transitions. [2021-10-16 03:08:15,776 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 244 transitions. Word has length 60 [2021-10-16 03:08:15,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:15,777 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 244 transitions. [2021-10-16 03:08:15,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:15,778 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 244 transitions. [2021-10-16 03:08:15,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-16 03:08:15,784 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:15,785 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:15,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 03:08:16,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:08:16,006 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:08:16,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:16,007 INFO L82 PathProgramCache]: Analyzing trace with hash -751274889, now seen corresponding path program 1 times [2021-10-16 03:08:16,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:08:16,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1789281719] [2021-10-16 03:08:16,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:16,008 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:08:16,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:08:16,009 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:08:16,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 03:08:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:16,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:08:16,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:08:16,415 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:08:16,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:08:16,609 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:08:16,610 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:08:16,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1789281719] [2021-10-16 03:08:16,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1789281719] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:16,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:08:16,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:08:16,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060673311] [2021-10-16 03:08:16,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:08:16,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:08:16,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:08:16,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:16,616 INFO L87 Difference]: Start difference. First operand 165 states and 244 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:16,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:16,824 INFO L93 Difference]: Finished difference Result 368 states and 559 transitions. [2021-10-16 03:08:16,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:08:16,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-10-16 03:08:16,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:16,828 INFO L225 Difference]: With dead ends: 368 [2021-10-16 03:08:16,828 INFO L226 Difference]: Without dead ends: 211 [2021-10-16 03:08:16,830 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:16,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-10-16 03:08:16,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 207. [2021-10-16 03:08:16,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.412621359223301) internal successors, (291), 206 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:16,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 291 transitions. [2021-10-16 03:08:16,857 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 291 transitions. Word has length 81 [2021-10-16 03:08:16,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:16,860 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 291 transitions. [2021-10-16 03:08:16,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:16,861 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 291 transitions. [2021-10-16 03:08:16,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-16 03:08:16,864 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:16,864 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:16,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 03:08:17,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:08:17,086 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:08:17,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:17,086 INFO L82 PathProgramCache]: Analyzing trace with hash -503128395, now seen corresponding path program 1 times [2021-10-16 03:08:17,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:08:17,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1368320009] [2021-10-16 03:08:17,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:17,088 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:08:17,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:08:17,089 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:08:17,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 03:08:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:17,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:08:17,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:08:17,510 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:08:17,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:08:17,713 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:08:17,713 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:08:17,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1368320009] [2021-10-16 03:08:17,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1368320009] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:17,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:08:17,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:08:17,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187089692] [2021-10-16 03:08:17,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:08:17,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:08:17,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:08:17,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:17,716 INFO L87 Difference]: Start difference. First operand 207 states and 291 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:17,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:17,876 INFO L93 Difference]: Finished difference Result 432 states and 616 transitions. [2021-10-16 03:08:17,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:08:17,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-10-16 03:08:17,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:17,880 INFO L225 Difference]: With dead ends: 432 [2021-10-16 03:08:17,880 INFO L226 Difference]: Without dead ends: 233 [2021-10-16 03:08:17,880 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:17,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-10-16 03:08:17,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 230. [2021-10-16 03:08:17,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 1.3930131004366813) internal successors, (319), 229 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:17,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 319 transitions. [2021-10-16 03:08:17,892 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 319 transitions. Word has length 81 [2021-10-16 03:08:17,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:17,893 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 319 transitions. [2021-10-16 03:08:17,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:17,894 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 319 transitions. [2021-10-16 03:08:17,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-16 03:08:17,895 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:17,895 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:17,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 03:08:18,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:08:18,111 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:08:18,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:18,111 INFO L82 PathProgramCache]: Analyzing trace with hash 356294499, now seen corresponding path program 1 times [2021-10-16 03:08:18,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:08:18,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348114455] [2021-10-16 03:08:18,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:18,112 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:08:18,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:08:18,113 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:08:18,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 03:08:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:18,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:08:18,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:08:18,640 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 03:08:18,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:08:18,914 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 03:08:18,914 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:08:18,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348114455] [2021-10-16 03:08:18,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348114455] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:18,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:08:18,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:08:18,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886705429] [2021-10-16 03:08:18,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:08:18,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:08:18,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:08:18,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:18,923 INFO L87 Difference]: Start difference. First operand 230 states and 319 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:19,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:19,099 INFO L93 Difference]: Finished difference Result 489 states and 692 transitions. [2021-10-16 03:08:19,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:08:19,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-10-16 03:08:19,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:19,104 INFO L225 Difference]: With dead ends: 489 [2021-10-16 03:08:19,119 INFO L226 Difference]: Without dead ends: 267 [2021-10-16 03:08:19,120 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:19,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-10-16 03:08:19,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 255. [2021-10-16 03:08:19,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.374015748031496) internal successors, (349), 254 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:19,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 349 transitions. [2021-10-16 03:08:19,138 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 349 transitions. Word has length 101 [2021-10-16 03:08:19,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:19,141 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 349 transitions. [2021-10-16 03:08:19,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:19,142 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 349 transitions. [2021-10-16 03:08:19,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-10-16 03:08:19,150 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:19,151 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:19,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 03:08:19,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:08:19,365 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:08:19,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:19,366 INFO L82 PathProgramCache]: Analyzing trace with hash 112174862, now seen corresponding path program 1 times [2021-10-16 03:08:19,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:08:19,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1978751929] [2021-10-16 03:08:19,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:19,367 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:08:19,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:08:19,368 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:08:19,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 03:08:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:19,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:08:19,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:08:20,074 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 03:08:20,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:08:20,429 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 03:08:20,429 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:08:20,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1978751929] [2021-10-16 03:08:20,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1978751929] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:20,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:08:20,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 03:08:20,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705365258] [2021-10-16 03:08:20,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:08:20,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:08:20,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:08:20,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:08:20,432 INFO L87 Difference]: Start difference. First operand 255 states and 349 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:20,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:20,511 INFO L93 Difference]: Finished difference Result 986 states and 1348 transitions. [2021-10-16 03:08:20,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:08:20,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-10-16 03:08:20,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:20,518 INFO L225 Difference]: With dead ends: 986 [2021-10-16 03:08:20,518 INFO L226 Difference]: Without dead ends: 739 [2021-10-16 03:08:20,519 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:08:20,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2021-10-16 03:08:20,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 737. [2021-10-16 03:08:20,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 736 states have (on average 1.3627717391304348) internal successors, (1003), 736 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:20,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1003 transitions. [2021-10-16 03:08:20,544 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1003 transitions. Word has length 121 [2021-10-16 03:08:20,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:20,545 INFO L470 AbstractCegarLoop]: Abstraction has 737 states and 1003 transitions. [2021-10-16 03:08:20,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:20,547 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1003 transitions. [2021-10-16 03:08:20,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-16 03:08:20,549 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:20,550 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:20,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 03:08:20,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:08:20,763 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:08:20,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:20,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1428032826, now seen corresponding path program 1 times [2021-10-16 03:08:20,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:08:20,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [942596881] [2021-10-16 03:08:20,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:20,764 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:08:20,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:08:20,766 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:08:20,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 03:08:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:21,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:08:21,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:08:21,366 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:08:21,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:08:21,715 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:08:21,715 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:08:21,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [942596881] [2021-10-16 03:08:21,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [942596881] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:21,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:08:21,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:08:21,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736122987] [2021-10-16 03:08:21,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:08:21,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:08:21,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:08:21,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:21,717 INFO L87 Difference]: Start difference. First operand 737 states and 1003 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:21,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:21,789 INFO L93 Difference]: Finished difference Result 1709 states and 2327 transitions. [2021-10-16 03:08:21,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:08:21,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-10-16 03:08:21,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:21,796 INFO L225 Difference]: With dead ends: 1709 [2021-10-16 03:08:21,797 INFO L226 Difference]: Without dead ends: 980 [2021-10-16 03:08:21,798 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:21,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2021-10-16 03:08:21,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 980. [2021-10-16 03:08:21,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 979 states have (on average 1.3595505617977528) internal successors, (1331), 979 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:21,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1331 transitions. [2021-10-16 03:08:21,832 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1331 transitions. Word has length 122 [2021-10-16 03:08:21,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:21,832 INFO L470 AbstractCegarLoop]: Abstraction has 980 states and 1331 transitions. [2021-10-16 03:08:21,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:21,833 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1331 transitions. [2021-10-16 03:08:21,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-16 03:08:21,836 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:21,836 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:21,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 03:08:22,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:08:22,050 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:08:22,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:22,050 INFO L82 PathProgramCache]: Analyzing trace with hash -990451652, now seen corresponding path program 1 times [2021-10-16 03:08:22,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:08:22,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1807993706] [2021-10-16 03:08:22,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:22,051 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:08:22,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:08:22,052 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:08:22,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 03:08:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:22,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:08:22,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:08:22,645 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-16 03:08:22,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:08:22,992 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-16 03:08:22,993 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:08:22,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1807993706] [2021-10-16 03:08:22,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1807993706] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:22,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:08:22,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:08:22,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561825214] [2021-10-16 03:08:22,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:08:22,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:08:22,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:08:22,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:22,996 INFO L87 Difference]: Start difference. First operand 980 states and 1331 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:23,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:23,052 INFO L93 Difference]: Finished difference Result 1976 states and 2680 transitions. [2021-10-16 03:08:23,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:08:23,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-10-16 03:08:23,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:23,063 INFO L225 Difference]: With dead ends: 1976 [2021-10-16 03:08:23,063 INFO L226 Difference]: Without dead ends: 1004 [2021-10-16 03:08:23,065 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:23,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-10-16 03:08:23,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 1004. [2021-10-16 03:08:23,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1003 states have (on average 1.3559322033898304) internal successors, (1360), 1003 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:23,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1360 transitions. [2021-10-16 03:08:23,100 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1360 transitions. Word has length 122 [2021-10-16 03:08:23,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:23,101 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 1360 transitions. [2021-10-16 03:08:23,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:23,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1360 transitions. [2021-10-16 03:08:23,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-16 03:08:23,104 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:23,105 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:23,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 03:08:23,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:08:23,322 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:08:23,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:23,323 INFO L82 PathProgramCache]: Analyzing trace with hash 398842362, now seen corresponding path program 1 times [2021-10-16 03:08:23,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:08:23,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938531615] [2021-10-16 03:08:23,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:23,323 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:08:23,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:08:23,325 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:08:23,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 03:08:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:23,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:08:23,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:08:24,000 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-10-16 03:08:24,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:08:24,310 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-10-16 03:08:24,310 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:08:24,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938531615] [2021-10-16 03:08:24,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938531615] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:24,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:08:24,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:08:24,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563328816] [2021-10-16 03:08:24,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:08:24,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:08:24,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:08:24,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:24,313 INFO L87 Difference]: Start difference. First operand 1004 states and 1360 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:24,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:24,349 INFO L93 Difference]: Finished difference Result 2013 states and 2722 transitions. [2021-10-16 03:08:24,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:08:24,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-10-16 03:08:24,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:24,360 INFO L225 Difference]: With dead ends: 2013 [2021-10-16 03:08:24,360 INFO L226 Difference]: Without dead ends: 1017 [2021-10-16 03:08:24,362 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:24,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2021-10-16 03:08:24,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 1017. [2021-10-16 03:08:24,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 1016 states have (on average 1.3513779527559056) internal successors, (1373), 1016 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:24,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1373 transitions. [2021-10-16 03:08:24,398 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1373 transitions. Word has length 122 [2021-10-16 03:08:24,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:24,399 INFO L470 AbstractCegarLoop]: Abstraction has 1017 states and 1373 transitions. [2021-10-16 03:08:24,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:24,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1373 transitions. [2021-10-16 03:08:24,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-10-16 03:08:24,403 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:24,403 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:24,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 03:08:24,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:08:24,617 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:08:24,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:24,618 INFO L82 PathProgramCache]: Analyzing trace with hash -541828422, now seen corresponding path program 1 times [2021-10-16 03:08:24,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:08:24,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758674551] [2021-10-16 03:08:24,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:24,618 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:08:24,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:08:24,619 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:08:24,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 03:08:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:25,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:08:25,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:08:25,576 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 03:08:25,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:08:25,967 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 03:08:25,967 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:08:25,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758674551] [2021-10-16 03:08:25,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758674551] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:25,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:08:25,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 03:08:25,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192416545] [2021-10-16 03:08:25,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:08:25,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:08:25,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:08:25,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:08:25,970 INFO L87 Difference]: Start difference. First operand 1017 states and 1373 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:26,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:26,317 INFO L93 Difference]: Finished difference Result 2321 states and 3285 transitions. [2021-10-16 03:08:26,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:08:26,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-10-16 03:08:26,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:26,329 INFO L225 Difference]: With dead ends: 2321 [2021-10-16 03:08:26,329 INFO L226 Difference]: Without dead ends: 1325 [2021-10-16 03:08:26,331 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:08:26,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2021-10-16 03:08:26,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1295. [2021-10-16 03:08:26,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1295 states, 1294 states have (on average 1.3894899536321483) internal successors, (1798), 1294 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:26,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 1798 transitions. [2021-10-16 03:08:26,379 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 1798 transitions. Word has length 159 [2021-10-16 03:08:26,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:26,380 INFO L470 AbstractCegarLoop]: Abstraction has 1295 states and 1798 transitions. [2021-10-16 03:08:26,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:26,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 1798 transitions. [2021-10-16 03:08:26,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-10-16 03:08:26,384 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:26,385 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:26,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 03:08:26,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:08:26,602 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:08:26,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:26,602 INFO L82 PathProgramCache]: Analyzing trace with hash -640990187, now seen corresponding path program 1 times [2021-10-16 03:08:26,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:08:26,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1160103662] [2021-10-16 03:08:26,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:26,603 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:08:26,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:08:26,604 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:08:26,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 03:08:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:27,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:08:27,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:08:27,620 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-10-16 03:08:27,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:08:28,031 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-10-16 03:08:28,032 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:08:28,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1160103662] [2021-10-16 03:08:28,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1160103662] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:28,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:08:28,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:08:28,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372084958] [2021-10-16 03:08:28,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:08:28,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:08:28,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:08:28,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:28,034 INFO L87 Difference]: Start difference. First operand 1295 states and 1798 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:28,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:28,233 INFO L93 Difference]: Finished difference Result 2693 states and 3803 transitions. [2021-10-16 03:08:28,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:08:28,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2021-10-16 03:08:28,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:28,244 INFO L225 Difference]: With dead ends: 2693 [2021-10-16 03:08:28,244 INFO L226 Difference]: Without dead ends: 1419 [2021-10-16 03:08:28,246 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:28,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2021-10-16 03:08:28,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1419. [2021-10-16 03:08:28,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1418 states have (on average 1.369534555712271) internal successors, (1942), 1418 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:28,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 1942 transitions. [2021-10-16 03:08:28,305 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 1942 transitions. Word has length 203 [2021-10-16 03:08:28,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:28,306 INFO L470 AbstractCegarLoop]: Abstraction has 1419 states and 1942 transitions. [2021-10-16 03:08:28,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:28,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 1942 transitions. [2021-10-16 03:08:28,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-10-16 03:08:28,311 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:28,311 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:28,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-16 03:08:28,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:08:28,525 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:08:28,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:28,526 INFO L82 PathProgramCache]: Analyzing trace with hash -890289059, now seen corresponding path program 1 times [2021-10-16 03:08:28,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:08:28,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101507093] [2021-10-16 03:08:28,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:28,527 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:08:28,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:08:28,527 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:08:28,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-16 03:08:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:29,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:08:29,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:08:29,645 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2021-10-16 03:08:29,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:08:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2021-10-16 03:08:30,069 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:08:30,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101507093] [2021-10-16 03:08:30,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101507093] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:30,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:08:30,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 03:08:30,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111596554] [2021-10-16 03:08:30,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:08:30,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:08:30,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:08:30,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:08:30,072 INFO L87 Difference]: Start difference. First operand 1419 states and 1942 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:30,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:30,398 INFO L93 Difference]: Finished difference Result 2870 states and 4055 transitions. [2021-10-16 03:08:30,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:08:30,398 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 231 [2021-10-16 03:08:30,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:30,406 INFO L225 Difference]: With dead ends: 2870 [2021-10-16 03:08:30,407 INFO L226 Difference]: Without dead ends: 1294 [2021-10-16 03:08:30,409 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:08:30,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2021-10-16 03:08:30,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1280. [2021-10-16 03:08:30,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 1279 states have (on average 1.3940578577013292) internal successors, (1783), 1279 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:30,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1783 transitions. [2021-10-16 03:08:30,457 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1783 transitions. Word has length 231 [2021-10-16 03:08:30,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:30,457 INFO L470 AbstractCegarLoop]: Abstraction has 1280 states and 1783 transitions. [2021-10-16 03:08:30,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:30,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1783 transitions. [2021-10-16 03:08:30,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-10-16 03:08:30,464 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:30,464 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:30,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-16 03:08:30,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:08:30,678 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:08:30,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:30,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1829254476, now seen corresponding path program 1 times [2021-10-16 03:08:30,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:08:30,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001016188] [2021-10-16 03:08:30,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:30,679 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:08:30,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:08:30,680 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:08:30,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-16 03:08:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:31,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:08:31,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:08:32,109 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-10-16 03:08:32,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:08:32,768 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-10-16 03:08:32,768 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:08:32,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001016188] [2021-10-16 03:08:32,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001016188] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:32,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:08:32,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:08:32,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209590001] [2021-10-16 03:08:32,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:08:32,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:08:32,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:08:32,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:32,770 INFO L87 Difference]: Start difference. First operand 1280 states and 1783 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:32,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:32,830 INFO L93 Difference]: Finished difference Result 3591 states and 5060 transitions. [2021-10-16 03:08:32,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:08:32,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 271 [2021-10-16 03:08:32,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:32,841 INFO L225 Difference]: With dead ends: 3591 [2021-10-16 03:08:32,841 INFO L226 Difference]: Without dead ends: 1606 [2021-10-16 03:08:32,843 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:32,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2021-10-16 03:08:32,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1566. [2021-10-16 03:08:32,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1566 states, 1565 states have (on average 1.392332268370607) internal successors, (2179), 1565 states have internal predecessors, (2179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:32,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 2179 transitions. [2021-10-16 03:08:32,894 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 2179 transitions. Word has length 271 [2021-10-16 03:08:32,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:32,894 INFO L470 AbstractCegarLoop]: Abstraction has 1566 states and 2179 transitions. [2021-10-16 03:08:32,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:32,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 2179 transitions. [2021-10-16 03:08:32,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-10-16 03:08:32,901 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:32,902 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:32,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-16 03:08:33,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:08:33,115 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:08:33,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:33,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1891635766, now seen corresponding path program 1 times [2021-10-16 03:08:33,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:08:33,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [278172809] [2021-10-16 03:08:33,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:33,117 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:08:33,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:08:33,117 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:08:33,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-16 03:08:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:33,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:08:33,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:08:34,590 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 500 proven. 0 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-10-16 03:08:34,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:08:35,220 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 500 proven. 0 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-10-16 03:08:35,221 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:08:35,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [278172809] [2021-10-16 03:08:35,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [278172809] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:35,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:08:35,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:08:35,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316012838] [2021-10-16 03:08:35,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:08:35,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:08:35,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:08:35,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:35,223 INFO L87 Difference]: Start difference. First operand 1566 states and 2179 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:35,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:35,400 INFO L93 Difference]: Finished difference Result 3247 states and 4577 transitions. [2021-10-16 03:08:35,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:08:35,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 317 [2021-10-16 03:08:35,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:35,411 INFO L225 Difference]: With dead ends: 3247 [2021-10-16 03:08:35,411 INFO L226 Difference]: Without dead ends: 1702 [2021-10-16 03:08:35,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 631 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:35,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2021-10-16 03:08:35,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1674. [2021-10-16 03:08:35,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1674 states, 1673 states have (on average 1.3789599521817095) internal successors, (2307), 1673 states have internal predecessors, (2307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:35,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 2307 transitions. [2021-10-16 03:08:35,480 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 2307 transitions. Word has length 317 [2021-10-16 03:08:35,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:35,481 INFO L470 AbstractCegarLoop]: Abstraction has 1674 states and 2307 transitions. [2021-10-16 03:08:35,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:35,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 2307 transitions. [2021-10-16 03:08:35,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2021-10-16 03:08:35,489 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:35,489 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:35,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-16 03:08:35,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:08:35,705 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:08:35,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:35,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1795423714, now seen corresponding path program 1 times [2021-10-16 03:08:35,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:08:35,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758507144] [2021-10-16 03:08:35,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:35,707 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:08:35,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:08:35,708 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:08:35,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-16 03:08:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:36,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:08:36,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:08:37,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1151 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 509 trivial. 0 not checked. [2021-10-16 03:08:37,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:08:38,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1151 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 509 trivial. 0 not checked. [2021-10-16 03:08:38,150 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:08:38,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758507144] [2021-10-16 03:08:38,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758507144] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:38,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:08:38,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:08:38,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006480227] [2021-10-16 03:08:38,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:08:38,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:08:38,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:08:38,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:38,153 INFO L87 Difference]: Start difference. First operand 1674 states and 2307 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:38,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:38,366 INFO L93 Difference]: Finished difference Result 3451 states and 4809 transitions. [2021-10-16 03:08:38,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:08:38,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 340 [2021-10-16 03:08:38,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:38,379 INFO L225 Difference]: With dead ends: 3451 [2021-10-16 03:08:38,379 INFO L226 Difference]: Without dead ends: 1798 [2021-10-16 03:08:38,383 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 678 GetRequests, 677 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:38,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2021-10-16 03:08:38,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1790. [2021-10-16 03:08:38,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1790 states, 1789 states have (on average 1.3655673560648407) internal successors, (2443), 1789 states have internal predecessors, (2443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:38,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1790 states to 1790 states and 2443 transitions. [2021-10-16 03:08:38,444 INFO L78 Accepts]: Start accepts. Automaton has 1790 states and 2443 transitions. Word has length 340 [2021-10-16 03:08:38,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:38,445 INFO L470 AbstractCegarLoop]: Abstraction has 1790 states and 2443 transitions. [2021-10-16 03:08:38,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:38,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1790 states and 2443 transitions. [2021-10-16 03:08:38,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2021-10-16 03:08:38,450 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:38,450 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:38,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-16 03:08:38,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:08:38,666 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:08:38,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:38,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1520948552, now seen corresponding path program 1 times [2021-10-16 03:08:38,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:08:38,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1438264643] [2021-10-16 03:08:38,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:38,668 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:08:38,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:08:38,670 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:08:38,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-16 03:08:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:39,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:08:39,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:08:40,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 699 proven. 0 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2021-10-16 03:08:40,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:08:41,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 699 proven. 0 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2021-10-16 03:08:41,302 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:08:41,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1438264643] [2021-10-16 03:08:41,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1438264643] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:41,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:08:41,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:08:41,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485583021] [2021-10-16 03:08:41,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:08:41,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:08:41,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:08:41,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:41,305 INFO L87 Difference]: Start difference. First operand 1790 states and 2443 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:41,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:41,365 INFO L93 Difference]: Finished difference Result 5320 states and 7267 transitions. [2021-10-16 03:08:41,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:08:41,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 373 [2021-10-16 03:08:41,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:41,386 INFO L225 Difference]: With dead ends: 5320 [2021-10-16 03:08:41,387 INFO L226 Difference]: Without dead ends: 3551 [2021-10-16 03:08:41,390 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 743 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:41,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3551 states. [2021-10-16 03:08:41,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3551 to 3549. [2021-10-16 03:08:41,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3549 states, 3548 states have (on average 1.3641488162344984) internal successors, (4840), 3548 states have internal predecessors, (4840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:41,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3549 states to 3549 states and 4840 transitions. [2021-10-16 03:08:41,509 INFO L78 Accepts]: Start accepts. Automaton has 3549 states and 4840 transitions. Word has length 373 [2021-10-16 03:08:41,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:41,510 INFO L470 AbstractCegarLoop]: Abstraction has 3549 states and 4840 transitions. [2021-10-16 03:08:41,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:41,511 INFO L276 IsEmpty]: Start isEmpty. Operand 3549 states and 4840 transitions. [2021-10-16 03:08:41,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-10-16 03:08:41,525 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:41,525 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:41,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-16 03:08:41,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:08:41,738 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:08:41,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:41,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1193592354, now seen corresponding path program 1 times [2021-10-16 03:08:41,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:08:41,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195948105] [2021-10-16 03:08:41,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:41,739 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:08:41,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:08:41,740 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:08:41,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-16 03:08:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:42,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:08:42,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:08:43,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 876 proven. 26 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-10-16 03:08:43,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:08:44,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 876 proven. 26 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-10-16 03:08:44,515 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:08:44,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195948105] [2021-10-16 03:08:44,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195948105] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:08:44,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [246267425] [2021-10-16 03:08:44,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:44,516 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:08:44,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:08:44,522 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:08:44,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-10-16 03:08:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:46,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:08:46,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:08:47,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 876 proven. 26 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-10-16 03:08:47,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:08:47,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 876 proven. 26 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-10-16 03:08:47,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [246267425] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:08:47,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274596715] [2021-10-16 03:08:47,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:47,765 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:08:47,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:08:47,765 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:08:47,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-16 03:08:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:49,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:08:49,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:08:50,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 876 proven. 26 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-10-16 03:08:50,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:08:51,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 876 proven. 26 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-10-16 03:08:51,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274596715] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:08:51,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:08:51,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 4 [2021-10-16 03:08:51,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175037189] [2021-10-16 03:08:51,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:08:51,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:08:51,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:08:51,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:08:51,052 INFO L87 Difference]: Start difference. First operand 3549 states and 4840 transitions. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:51,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:51,400 INFO L93 Difference]: Finished difference Result 10581 states and 14386 transitions. [2021-10-16 03:08:51,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:08:51,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 374 [2021-10-16 03:08:51,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:51,439 INFO L225 Difference]: With dead ends: 10581 [2021-10-16 03:08:51,439 INFO L226 Difference]: Without dead ends: 7053 [2021-10-16 03:08:51,446 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2240 GetRequests, 2237 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:08:51,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7053 states. [2021-10-16 03:08:51,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7053 to 4739. [2021-10-16 03:08:51,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4739 states, 4738 states have (on average 1.3925707049387928) internal successors, (6598), 4738 states have internal predecessors, (6598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:51,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4739 states to 4739 states and 6598 transitions. [2021-10-16 03:08:51,625 INFO L78 Accepts]: Start accepts. Automaton has 4739 states and 6598 transitions. Word has length 374 [2021-10-16 03:08:51,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:51,626 INFO L470 AbstractCegarLoop]: Abstraction has 4739 states and 6598 transitions. [2021-10-16 03:08:51,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:51,626 INFO L276 IsEmpty]: Start isEmpty. Operand 4739 states and 6598 transitions. [2021-10-16 03:08:51,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-10-16 03:08:51,633 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:51,633 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:51,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-16 03:08:51,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-10-16 03:08:52,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-16 03:08:52,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:08:52,234 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:08:52,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:52,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1453642420, now seen corresponding path program 1 times [2021-10-16 03:08:52,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:08:52,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069893805] [2021-10-16 03:08:52,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:52,236 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:08:52,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:08:52,236 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:08:52,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-16 03:08:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:53,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:08:53,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:08:54,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1671 backedges. 917 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2021-10-16 03:08:54,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:08:55,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1671 backedges. 917 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2021-10-16 03:08:55,349 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:08:55,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069893805] [2021-10-16 03:08:55,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2069893805] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:55,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:08:55,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:08:55,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92612084] [2021-10-16 03:08:55,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:08:55,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:08:55,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:08:55,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:55,353 INFO L87 Difference]: Start difference. First operand 4739 states and 6598 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:55,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:55,531 INFO L93 Difference]: Finished difference Result 9803 states and 13759 transitions. [2021-10-16 03:08:55,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:08:55,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 404 [2021-10-16 03:08:55,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:55,561 INFO L225 Difference]: With dead ends: 9803 [2021-10-16 03:08:55,561 INFO L226 Difference]: Without dead ends: 5085 [2021-10-16 03:08:55,568 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 806 GetRequests, 805 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:55,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5085 states. [2021-10-16 03:08:55,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5085 to 4899. [2021-10-16 03:08:55,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4899 states, 4898 states have (on average 1.3879134340547161) internal successors, (6798), 4898 states have internal predecessors, (6798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:55,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4899 states to 4899 states and 6798 transitions. [2021-10-16 03:08:55,706 INFO L78 Accepts]: Start accepts. Automaton has 4899 states and 6798 transitions. Word has length 404 [2021-10-16 03:08:55,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:55,707 INFO L470 AbstractCegarLoop]: Abstraction has 4899 states and 6798 transitions. [2021-10-16 03:08:55,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:55,707 INFO L276 IsEmpty]: Start isEmpty. Operand 4899 states and 6798 transitions. [2021-10-16 03:08:55,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2021-10-16 03:08:55,714 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:55,715 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:55,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-16 03:08:55,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:08:55,930 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:08:55,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:55,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1756109688, now seen corresponding path program 1 times [2021-10-16 03:08:55,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:08:55,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1632494334] [2021-10-16 03:08:55,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:55,931 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:08:55,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:08:55,932 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:08:55,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-16 03:08:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:57,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:08:57,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:08:58,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1671 backedges. 984 proven. 0 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2021-10-16 03:08:58,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:08:59,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1671 backedges. 984 proven. 0 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2021-10-16 03:08:59,211 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:08:59,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1632494334] [2021-10-16 03:08:59,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1632494334] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:59,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:08:59,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:08:59,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440181849] [2021-10-16 03:08:59,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:08:59,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:08:59,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:08:59,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:59,216 INFO L87 Difference]: Start difference. First operand 4899 states and 6798 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:59,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:59,476 INFO L93 Difference]: Finished difference Result 10353 states and 14611 transitions. [2021-10-16 03:08:59,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:08:59,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 405 [2021-10-16 03:08:59,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:59,498 INFO L225 Difference]: With dead ends: 10353 [2021-10-16 03:08:59,498 INFO L226 Difference]: Without dead ends: 5475 [2021-10-16 03:08:59,504 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 808 GetRequests, 807 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:59,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5475 states. [2021-10-16 03:08:59,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5475 to 5443. [2021-10-16 03:08:59,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5443 states, 5442 states have (on average 1.3638368246968027) internal successors, (7422), 5442 states have internal predecessors, (7422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:59,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5443 states to 5443 states and 7422 transitions. [2021-10-16 03:08:59,639 INFO L78 Accepts]: Start accepts. Automaton has 5443 states and 7422 transitions. Word has length 405 [2021-10-16 03:08:59,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:59,640 INFO L470 AbstractCegarLoop]: Abstraction has 5443 states and 7422 transitions. [2021-10-16 03:08:59,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:59,640 INFO L276 IsEmpty]: Start isEmpty. Operand 5443 states and 7422 transitions. [2021-10-16 03:08:59,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2021-10-16 03:08:59,674 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:59,674 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 7, 6, 6, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:59,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-16 03:08:59,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:08:59,894 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:08:59,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:59,895 INFO L82 PathProgramCache]: Analyzing trace with hash -11640254, now seen corresponding path program 1 times [2021-10-16 03:08:59,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:08:59,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834276696] [2021-10-16 03:08:59,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:59,896 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:08:59,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:08:59,897 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:08:59,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-16 03:09:01,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:09:01,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:09:01,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:09:02,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1982 backedges. 1163 proven. 0 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2021-10-16 03:09:02,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:09:03,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1982 backedges. 1163 proven. 0 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2021-10-16 03:09:03,360 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:09:03,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834276696] [2021-10-16 03:09:03,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834276696] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:03,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:03,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:09:03,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861028100] [2021-10-16 03:09:03,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:09:03,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:09:03,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:09:03,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:09:03,363 INFO L87 Difference]: Start difference. First operand 5443 states and 7422 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:03,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:03,575 INFO L93 Difference]: Finished difference Result 11473 states and 15923 transitions. [2021-10-16 03:09:03,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:09:03,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 436 [2021-10-16 03:09:03,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:03,590 INFO L225 Difference]: With dead ends: 11473 [2021-10-16 03:09:03,590 INFO L226 Difference]: Without dead ends: 6051 [2021-10-16 03:09:03,596 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 870 GetRequests, 869 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:09:03,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6051 states. [2021-10-16 03:09:03,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6051 to 6019. [2021-10-16 03:09:03,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6019 states, 6018 states have (on average 1.34230641409106) internal successors, (8078), 6018 states have internal predecessors, (8078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:03,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6019 states to 6019 states and 8078 transitions. [2021-10-16 03:09:03,739 INFO L78 Accepts]: Start accepts. Automaton has 6019 states and 8078 transitions. Word has length 436 [2021-10-16 03:09:03,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:03,740 INFO L470 AbstractCegarLoop]: Abstraction has 6019 states and 8078 transitions. [2021-10-16 03:09:03,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:03,740 INFO L276 IsEmpty]: Start isEmpty. Operand 6019 states and 8078 transitions. [2021-10-16 03:09:03,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2021-10-16 03:09:03,749 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:03,750 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 8, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:03,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-16 03:09:03,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:09:03,964 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:09:03,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:03,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1411824547, now seen corresponding path program 1 times [2021-10-16 03:09:03,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:09:03,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1637747212] [2021-10-16 03:09:03,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:09:03,966 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:09:03,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:09:03,967 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:09:03,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-16 03:09:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:09:06,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:09:06,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:09:06,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2332 backedges. 1352 proven. 0 refuted. 0 times theorem prover too weak. 980 trivial. 0 not checked. [2021-10-16 03:09:06,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:09:07,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2332 backedges. 1352 proven. 0 refuted. 0 times theorem prover too weak. 980 trivial. 0 not checked. [2021-10-16 03:09:07,676 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:09:07,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1637747212] [2021-10-16 03:09:07,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1637747212] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:07,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:07,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:09:07,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114008860] [2021-10-16 03:09:07,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:09:07,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:09:07,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:09:07,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:09:07,678 INFO L87 Difference]: Start difference. First operand 6019 states and 8078 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:07,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:07,959 INFO L93 Difference]: Finished difference Result 11273 states and 14979 transitions. [2021-10-16 03:09:07,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:09:07,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 469 [2021-10-16 03:09:07,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:07,970 INFO L225 Difference]: With dead ends: 11273 [2021-10-16 03:09:07,971 INFO L226 Difference]: Without dead ends: 4825 [2021-10-16 03:09:07,977 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 936 GetRequests, 935 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:09:07,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4825 states. [2021-10-16 03:09:08,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4825 to 4343. [2021-10-16 03:09:08,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4343 states, 4342 states have (on average 1.2584062643942884) internal successors, (5464), 4342 states have internal predecessors, (5464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:08,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4343 states to 4343 states and 5464 transitions. [2021-10-16 03:09:08,095 INFO L78 Accepts]: Start accepts. Automaton has 4343 states and 5464 transitions. Word has length 469 [2021-10-16 03:09:08,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:08,096 INFO L470 AbstractCegarLoop]: Abstraction has 4343 states and 5464 transitions. [2021-10-16 03:09:08,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:08,097 INFO L276 IsEmpty]: Start isEmpty. Operand 4343 states and 5464 transitions. [2021-10-16 03:09:08,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2021-10-16 03:09:08,105 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:08,106 INFO L512 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 14, 14, 13, 13, 12, 12, 11, 11, 11, 11, 9, 8, 8, 7, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:08,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-16 03:09:08,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:09:08,329 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:09:08,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:08,329 INFO L82 PathProgramCache]: Analyzing trace with hash -2021178619, now seen corresponding path program 1 times [2021-10-16 03:09:08,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:09:08,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [465564875] [2021-10-16 03:09:08,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:09:08,330 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:09:08,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:09:08,331 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:09:08,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-16 03:09:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:09:10,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:09:10,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:09:11,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2728 backedges. 1309 proven. 26 refuted. 0 times theorem prover too weak. 1393 trivial. 0 not checked. [2021-10-16 03:09:11,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:09:12,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2728 backedges. 1309 proven. 26 refuted. 0 times theorem prover too weak. 1393 trivial. 0 not checked. [2021-10-16 03:09:12,373 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:09:12,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [465564875] [2021-10-16 03:09:12,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [465564875] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:09:12,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1504698349] [2021-10-16 03:09:12,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:09:12,373 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:09:12,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:09:12,374 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:09:12,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-10-16 03:09:15,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:09:15,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:09:15,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:09:17,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2728 backedges. 1309 proven. 26 refuted. 0 times theorem prover too weak. 1393 trivial. 0 not checked. [2021-10-16 03:09:17,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:09:17,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2728 backedges. 1309 proven. 26 refuted. 0 times theorem prover too weak. 1393 trivial. 0 not checked. [2021-10-16 03:09:17,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1504698349] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:09:17,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953328276] [2021-10-16 03:09:17,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:09:17,852 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:09:17,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:09:17,852 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:09:17,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-16 03:09:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:09:21,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:09:21,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:09:22,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2728 backedges. 1309 proven. 26 refuted. 0 times theorem prover too weak. 1393 trivial. 0 not checked. [2021-10-16 03:09:22,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:09:22,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2728 backedges. 1309 proven. 26 refuted. 0 times theorem prover too weak. 1393 trivial. 0 not checked. [2021-10-16 03:09:22,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953328276] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:09:22,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:09:22,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-16 03:09:22,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923568593] [2021-10-16 03:09:22,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:09:22,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:09:22,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:09:22,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:09:22,942 INFO L87 Difference]: Start difference. First operand 4343 states and 5464 transitions. Second operand has 6 states, 6 states have (on average 46.666666666666664) internal successors, (280), 6 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:23,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:23,255 INFO L93 Difference]: Finished difference Result 5670 states and 7101 transitions. [2021-10-16 03:09:23,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 03:09:23,256 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 46.666666666666664) internal successors, (280), 6 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 507 [2021-10-16 03:09:23,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:23,257 INFO L225 Difference]: With dead ends: 5670 [2021-10-16 03:09:23,257 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 03:09:23,262 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3042 GetRequests, 3035 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 27.8ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-16 03:09:23,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 03:09:23,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 03:09:23,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:23,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 03:09:23,263 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 507 [2021-10-16 03:09:23,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:23,263 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 03:09:23,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 46.666666666666664) internal successors, (280), 6 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:23,264 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 03:09:23,264 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 03:09:23,266 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:09:23,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-10-16 03:09:23,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2021-10-16 03:09:23,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-16 03:09:23,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:09:23,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 03:09:23,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:23,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:24,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:24,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:24,030 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:24,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:24,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:24,105 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:24,174 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:24,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:24,232 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:24,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:24,241 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:24,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:24,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:24,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:24,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:24,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:24,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:24,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:24,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:24,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:24,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:24,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:24,520 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:24,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:24,527 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:24,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:24,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:26,373 INFO L853 garLoopResultBuilder]: At program point L168(lines 167 609) the Hoare annotation is: (let ((.cse0 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse1 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse2 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (or (and .cse0 .cse1 .cse2) (and (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse1 .cse3) (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse0 .cse1) (and .cse1 .cse2 .cse3))) [2021-10-16 03:09:26,373 INFO L853 garLoopResultBuilder]: At program point L135(lines 128 622) the Hoare annotation is: (let ((.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse3 .cse2) (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) .cse3 .cse2) (and .cse0 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv0 32)) .cse2))) [2021-10-16 03:09:26,373 INFO L857 garLoopResultBuilder]: For program point L102(line 102) no Hoare annotation was computed. [2021-10-16 03:09:26,373 INFO L857 garLoopResultBuilder]: For program point L631(lines 631 659) no Hoare annotation was computed. [2021-10-16 03:09:26,374 INFO L857 garLoopResultBuilder]: For program point L466(lines 466 470) no Hoare annotation was computed. [2021-10-16 03:09:26,374 INFO L857 garLoopResultBuilder]: For program point L632(lines 632 656) no Hoare annotation was computed. [2021-10-16 03:09:26,374 INFO L857 garLoopResultBuilder]: For program point L566(lines 566 570) no Hoare annotation was computed. [2021-10-16 03:09:26,374 INFO L857 garLoopResultBuilder]: For program point L500(lines 500 504) no Hoare annotation was computed. [2021-10-16 03:09:26,374 INFO L857 garLoopResultBuilder]: For program point L566-2(lines 566 570) no Hoare annotation was computed. [2021-10-16 03:09:26,374 INFO L857 garLoopResultBuilder]: For program point L500-2(lines 211 592) no Hoare annotation was computed. [2021-10-16 03:09:26,374 INFO L857 garLoopResultBuilder]: For program point L203(lines 203 597) no Hoare annotation was computed. [2021-10-16 03:09:26,374 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 608) no Hoare annotation was computed. [2021-10-16 03:09:26,375 INFO L857 garLoopResultBuilder]: For program point L137(lines 137 619) no Hoare annotation was computed. [2021-10-16 03:09:26,375 INFO L857 garLoopResultBuilder]: For program point L104(lines 104 630) no Hoare annotation was computed. [2021-10-16 03:09:26,375 INFO L857 garLoopResultBuilder]: For program point L666(lines 666 670) no Hoare annotation was computed. [2021-10-16 03:09:26,375 INFO L857 garLoopResultBuilder]: For program point L633(lines 633 642) no Hoare annotation was computed. [2021-10-16 03:09:26,375 INFO L857 garLoopResultBuilder]: For program point L666-2(lines 666 670) no Hoare annotation was computed. [2021-10-16 03:09:26,375 INFO L857 garLoopResultBuilder]: For program point L633-2(lines 632 654) no Hoare annotation was computed. [2021-10-16 03:09:26,375 INFO L857 garLoopResultBuilder]: For program point L270(lines 270 274) no Hoare annotation was computed. [2021-10-16 03:09:26,375 INFO L853 garLoopResultBuilder]: At program point L204(lines 200 598) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse2 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1) (and .cse2 .cse0 .cse1) (and .cse2 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) .cse1))) [2021-10-16 03:09:26,376 INFO L853 garLoopResultBuilder]: At program point L105(lines 104 630) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2) (and .cse0 .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse2))) [2021-10-16 03:09:26,376 INFO L857 garLoopResultBuilder]: For program point L304(lines 304 308) no Hoare annotation was computed. [2021-10-16 03:09:26,376 INFO L857 garLoopResultBuilder]: For program point L304-2(lines 211 592) no Hoare annotation was computed. [2021-10-16 03:09:26,376 INFO L857 garLoopResultBuilder]: For program point L635(lines 635 639) no Hoare annotation was computed. [2021-10-16 03:09:26,376 INFO L857 garLoopResultBuilder]: For program point L206(lines 206 596) no Hoare annotation was computed. [2021-10-16 03:09:26,376 INFO L857 garLoopResultBuilder]: For program point L173(lines 173 607) no Hoare annotation was computed. [2021-10-16 03:09:26,376 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 618) no Hoare annotation was computed. [2021-10-16 03:09:26,376 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 629) no Hoare annotation was computed. [2021-10-16 03:09:26,376 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 343) no Hoare annotation was computed. [2021-10-16 03:09:26,376 INFO L857 garLoopResultBuilder]: For program point L339-2(lines 211 592) no Hoare annotation was computed. [2021-10-16 03:09:26,377 INFO L860 garLoopResultBuilder]: At program point L207(lines 206 596) the Hoare annotation is: true [2021-10-16 03:09:26,377 INFO L853 garLoopResultBuilder]: At program point L174(lines 170 608) the Hoare annotation is: (let ((.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse3 .cse2) (and (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse0 .cse3 .cse2))) [2021-10-16 03:09:26,377 INFO L853 garLoopResultBuilder]: At program point L141(lines 137 619) the Hoare annotation is: (let ((.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse3 .cse2) (and .cse0 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32)) .cse2) (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) .cse3 .cse2))) [2021-10-16 03:09:26,377 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 83) no Hoare annotation was computed. [2021-10-16 03:09:26,377 INFO L857 garLoopResultBuilder]: For program point L439(lines 439 451) no Hoare annotation was computed. [2021-10-16 03:09:26,377 INFO L853 garLoopResultBuilder]: At program point L406(lines 397 417) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1) (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1))) [2021-10-16 03:09:26,377 INFO L857 garLoopResultBuilder]: For program point L439-2(lines 439 451) no Hoare annotation was computed. [2021-10-16 03:09:26,377 INFO L857 garLoopResultBuilder]: For program point L176(lines 176 606) no Hoare annotation was computed. [2021-10-16 03:09:26,378 INFO L857 garLoopResultBuilder]: For program point L143(lines 143 617) no Hoare annotation was computed. [2021-10-16 03:09:26,378 INFO L857 garLoopResultBuilder]: For program point L110(lines 110 628) no Hoare annotation was computed. [2021-10-16 03:09:26,378 INFO L860 garLoopResultBuilder]: At program point L210(lines 209 595) the Hoare annotation is: true [2021-10-16 03:09:26,378 INFO L857 garLoopResultBuilder]: For program point L78(lines 78 82) no Hoare annotation was computed. [2021-10-16 03:09:26,378 INFO L857 garLoopResultBuilder]: For program point L78-2(lines 75 83) no Hoare annotation was computed. [2021-10-16 03:09:26,378 INFO L857 garLoopResultBuilder]: For program point L541(lines 541 546) no Hoare annotation was computed. [2021-10-16 03:09:26,378 INFO L857 garLoopResultBuilder]: For program point L442(lines 442 447) no Hoare annotation was computed. [2021-10-16 03:09:26,378 INFO L857 garLoopResultBuilder]: For program point L409(lines 409 413) no Hoare annotation was computed. [2021-10-16 03:09:26,378 INFO L857 garLoopResultBuilder]: For program point L244(lines 244 249) no Hoare annotation was computed. [2021-10-16 03:09:26,378 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 605) no Hoare annotation was computed. [2021-10-16 03:09:26,379 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 616) no Hoare annotation was computed. [2021-10-16 03:09:26,379 INFO L857 garLoopResultBuilder]: For program point L113(lines 113 627) no Hoare annotation was computed. [2021-10-16 03:09:26,379 INFO L857 garLoopResultBuilder]: For program point L576(lines 576 586) no Hoare annotation was computed. [2021-10-16 03:09:26,379 INFO L857 garLoopResultBuilder]: For program point L576-1(lines 576 586) no Hoare annotation was computed. [2021-10-16 03:09:26,379 INFO L857 garLoopResultBuilder]: For program point L510(lines 510 514) no Hoare annotation was computed. [2021-10-16 03:09:26,379 INFO L857 garLoopResultBuilder]: For program point L510-2(lines 510 514) no Hoare annotation was computed. [2021-10-16 03:09:26,379 INFO L853 garLoopResultBuilder]: At program point L180(lines 176 606) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1) (and .cse0 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1))) [2021-10-16 03:09:26,379 INFO L853 garLoopResultBuilder]: At program point L147(lines 143 617) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1) (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1))) [2021-10-16 03:09:26,379 INFO L857 garLoopResultBuilder]: For program point L478(lines 478 482) no Hoare annotation was computed. [2021-10-16 03:09:26,380 INFO L853 garLoopResultBuilder]: At program point L214(lines 107 629) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2) (and .cse0 .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse2))) [2021-10-16 03:09:26,380 INFO L860 garLoopResultBuilder]: At program point L677(lines 67 679) the Hoare annotation is: true [2021-10-16 03:09:26,380 INFO L857 garLoopResultBuilder]: For program point L644(lines 644 650) no Hoare annotation was computed. [2021-10-16 03:09:26,380 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 379) no Hoare annotation was computed. [2021-10-16 03:09:26,380 INFO L857 garLoopResultBuilder]: For program point L314(lines 314 318) no Hoare annotation was computed. [2021-10-16 03:09:26,380 INFO L857 garLoopResultBuilder]: For program point L314-2(lines 314 318) no Hoare annotation was computed. [2021-10-16 03:09:26,380 INFO L857 garLoopResultBuilder]: For program point L182(lines 182 604) no Hoare annotation was computed. [2021-10-16 03:09:26,380 INFO L857 garLoopResultBuilder]: For program point L149(lines 149 615) no Hoare annotation was computed. [2021-10-16 03:09:26,380 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 626) no Hoare annotation was computed. [2021-10-16 03:09:26,380 INFO L860 garLoopResultBuilder]: At program point L678(lines 12 680) the Hoare annotation is: true [2021-10-16 03:09:26,381 INFO L857 garLoopResultBuilder]: For program point L579(lines 579 583) no Hoare annotation was computed. [2021-10-16 03:09:26,381 INFO L857 garLoopResultBuilder]: For program point L85(lines 85 93) no Hoare annotation was computed. [2021-10-16 03:09:26,381 INFO L857 garLoopResultBuilder]: For program point L85-1(lines 67 679) no Hoare annotation was computed. [2021-10-16 03:09:26,381 INFO L857 garLoopResultBuilder]: For program point L350(lines 350 378) no Hoare annotation was computed. [2021-10-16 03:09:26,381 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 03:09:26,381 INFO L857 garLoopResultBuilder]: For program point L350-1(lines 350 378) no Hoare annotation was computed. [2021-10-16 03:09:26,381 INFO L857 garLoopResultBuilder]: For program point L251(lines 251 264) no Hoare annotation was computed. [2021-10-16 03:09:26,381 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 603) no Hoare annotation was computed. [2021-10-16 03:09:26,381 INFO L857 garLoopResultBuilder]: For program point L152(lines 152 614) no Hoare annotation was computed. [2021-10-16 03:09:26,381 INFO L857 garLoopResultBuilder]: For program point L119(lines 119 625) no Hoare annotation was computed. [2021-10-16 03:09:26,382 INFO L857 garLoopResultBuilder]: For program point L86(lines 86 90) no Hoare annotation was computed. [2021-10-16 03:09:26,382 INFO L857 garLoopResultBuilder]: For program point L351(lines 351 375) no Hoare annotation was computed. [2021-10-16 03:09:26,382 INFO L857 garLoopResultBuilder]: For program point L219(lines 219 223) no Hoare annotation was computed. [2021-10-16 03:09:26,382 INFO L853 garLoopResultBuilder]: At program point L186(lines 182 604) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1) (and .cse0 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1))) [2021-10-16 03:09:26,382 INFO L853 garLoopResultBuilder]: At program point L153(lines 149 615) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1) (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1))) [2021-10-16 03:09:26,382 INFO L857 garLoopResultBuilder]: For program point L219-2(lines 211 592) no Hoare annotation was computed. [2021-10-16 03:09:26,382 INFO L857 garLoopResultBuilder]: For program point L253(lines 253 258) no Hoare annotation was computed. [2021-10-16 03:09:26,382 INFO L857 garLoopResultBuilder]: For program point L551(lines 551 559) no Hoare annotation was computed. [2021-10-16 03:09:26,383 INFO L857 garLoopResultBuilder]: For program point L287(lines 287 291) no Hoare annotation was computed. [2021-10-16 03:09:26,383 INFO L857 garLoopResultBuilder]: For program point L287-2(lines 211 592) no Hoare annotation was computed. [2021-10-16 03:09:26,383 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 602) no Hoare annotation was computed. [2021-10-16 03:09:26,383 INFO L857 garLoopResultBuilder]: For program point L155(lines 155 613) no Hoare annotation was computed. [2021-10-16 03:09:26,383 INFO L857 garLoopResultBuilder]: For program point L122(lines 122 624) no Hoare annotation was computed. [2021-10-16 03:09:26,383 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 418) no Hoare annotation was computed. [2021-10-16 03:09:26,383 INFO L857 garLoopResultBuilder]: For program point L354(lines 354 374) no Hoare annotation was computed. [2021-10-16 03:09:26,383 INFO L853 garLoopResultBuilder]: At program point L123(lines 119 625) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2) (and .cse0 .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse2))) [2021-10-16 03:09:26,383 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 394) no Hoare annotation was computed. [2021-10-16 03:09:26,383 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 03:09:26,383 INFO L857 garLoopResultBuilder]: For program point L554(lines 554 558) no Hoare annotation was computed. [2021-10-16 03:09:26,384 INFO L857 garLoopResultBuilder]: For program point L521(lines 521 526) no Hoare annotation was computed. [2021-10-16 03:09:26,384 INFO L857 garLoopResultBuilder]: For program point L356(lines 356 360) no Hoare annotation was computed. [2021-10-16 03:09:26,384 INFO L857 garLoopResultBuilder]: For program point L323-1(lines 323 332) no Hoare annotation was computed. [2021-10-16 03:09:26,384 INFO L857 garLoopResultBuilder]: For program point L356-2(lines 354 372) no Hoare annotation was computed. [2021-10-16 03:09:26,384 INFO L857 garLoopResultBuilder]: For program point L191(lines 191 601) no Hoare annotation was computed. [2021-10-16 03:09:26,384 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 612) no Hoare annotation was computed. [2021-10-16 03:09:26,384 INFO L857 garLoopResultBuilder]: For program point L125(lines 125 623) no Hoare annotation was computed. [2021-10-16 03:09:26,384 INFO L853 garLoopResultBuilder]: At program point L555(lines 67 679) the Hoare annotation is: false [2021-10-16 03:09:26,384 INFO L857 garLoopResultBuilder]: For program point L489(lines 489 493) no Hoare annotation was computed. [2021-10-16 03:09:26,384 INFO L853 garLoopResultBuilder]: At program point L192(lines 188 602) the Hoare annotation is: (or (and (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (and (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0) (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) [2021-10-16 03:09:26,385 INFO L853 garLoopResultBuilder]: At program point L159(lines 155 613) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1) (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1))) [2021-10-16 03:09:26,385 INFO L853 garLoopResultBuilder]: At program point L126(lines 125 623) the Hoare annotation is: (and (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0))) [2021-10-16 03:09:26,385 INFO L857 garLoopResultBuilder]: For program point L457(lines 457 461) no Hoare annotation was computed. [2021-10-16 03:09:26,385 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 03:09:26,385 INFO L857 garLoopResultBuilder]: For program point L194(lines 194 600) no Hoare annotation was computed. [2021-10-16 03:09:26,385 INFO L857 garLoopResultBuilder]: For program point L161(lines 161 611) no Hoare annotation was computed. [2021-10-16 03:09:26,385 INFO L857 garLoopResultBuilder]: For program point L128(lines 128 622) no Hoare annotation was computed. [2021-10-16 03:09:26,385 INFO L860 garLoopResultBuilder]: At program point L690(lines 681 692) the Hoare annotation is: true [2021-10-16 03:09:26,388 INFO L857 garLoopResultBuilder]: For program point L327(lines 327 331) no Hoare annotation was computed. [2021-10-16 03:09:26,388 INFO L853 garLoopResultBuilder]: At program point L593(lines 101 661) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32)))) (.cse7 (= (_ bv8592 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse4 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (.cse10 (= (_ bv8608 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse2 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse6 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse9 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse8 (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse3 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse5 (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (or (and (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse0 .cse1) (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__state~0) (and .cse2 .cse1) (and .cse3 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and .cse4 .cse5 .cse2) (and (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse0 .cse1) (and (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and (= (_ bv8512 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse6 .cse0) (and .cse3 .cse7 .cse1) (and (= (_ bv8560 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and .cse8 .cse0 .cse1) (and .cse3 .cse9 .cse1) (and .cse4 .cse7 .cse2) (and .cse3 .cse10 .cse1) (and .cse6 .cse2) (and .cse4 .cse10 .cse2) (and (= (_ bv8528 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse6 .cse9) (and .cse8 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32))) (and .cse3 .cse5 .cse1))) [2021-10-16 03:09:26,388 INFO L857 garLoopResultBuilder]: For program point L560(lines 560 564) no Hoare annotation was computed. [2021-10-16 03:09:26,389 INFO L857 garLoopResultBuilder]: For program point L428(lines 428 432) no Hoare annotation was computed. [2021-10-16 03:09:26,389 INFO L853 garLoopResultBuilder]: At program point L362(lines 344 380) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1) (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1))) [2021-10-16 03:09:26,389 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 599) no Hoare annotation was computed. [2021-10-16 03:09:26,389 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 610) no Hoare annotation was computed. [2021-10-16 03:09:26,389 INFO L857 garLoopResultBuilder]: For program point L131(lines 131 621) no Hoare annotation was computed. [2021-10-16 03:09:26,389 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 03:09:26,390 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 673) no Hoare annotation was computed. [2021-10-16 03:09:26,390 INFO L857 garLoopResultBuilder]: For program point L528(lines 528 532) no Hoare annotation was computed. [2021-10-16 03:09:26,390 INFO L857 garLoopResultBuilder]: For program point L462(lines 462 473) no Hoare annotation was computed. [2021-10-16 03:09:26,390 INFO L857 garLoopResultBuilder]: For program point L528-2(lines 211 592) no Hoare annotation was computed. [2021-10-16 03:09:26,390 INFO L853 garLoopResultBuilder]: At program point L396(lines 387 418) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1) (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1))) [2021-10-16 03:09:26,391 INFO L857 garLoopResultBuilder]: For program point L231(lines 231 242) no Hoare annotation was computed. [2021-10-16 03:09:26,391 INFO L853 garLoopResultBuilder]: At program point L198(lines 194 600) the Hoare annotation is: (let ((.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse3 .cse2) (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) .cse3 .cse2))) [2021-10-16 03:09:26,391 INFO L853 garLoopResultBuilder]: At program point L165(lines 161 611) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1) (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1))) [2021-10-16 03:09:26,391 INFO L857 garLoopResultBuilder]: For program point L231-2(lines 231 242) no Hoare annotation was computed. [2021-10-16 03:09:26,391 INFO L857 garLoopResultBuilder]: For program point L364(lines 364 368) no Hoare annotation was computed. [2021-10-16 03:09:26,392 INFO L860 garLoopResultBuilder]: At program point L662(lines 100 663) the Hoare annotation is: true [2021-10-16 03:09:26,392 INFO L857 garLoopResultBuilder]: For program point L398(lines 398 404) no Hoare annotation was computed. [2021-10-16 03:09:26,392 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 238) no Hoare annotation was computed. [2021-10-16 03:09:26,392 INFO L857 garLoopResultBuilder]: For program point L200(lines 200 598) no Hoare annotation was computed. [2021-10-16 03:09:26,392 INFO L857 garLoopResultBuilder]: For program point L167(lines 167 609) no Hoare annotation was computed. [2021-10-16 03:09:26,392 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 620) no Hoare annotation was computed. [2021-10-16 03:09:26,393 INFO L853 garLoopResultBuilder]: At program point L101-2(lines 101 661) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32)))) (.cse7 (= (_ bv8592 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse4 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (.cse10 (= (_ bv8608 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse2 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse6 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse9 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse8 (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse3 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse5 (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (or (and (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse0 .cse1) (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__state~0) (and .cse2 .cse1) (and .cse3 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and .cse4 .cse5 .cse2) (and (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse0 .cse1) (and (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and (= (_ bv8512 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse6 .cse0) (and .cse3 .cse7 .cse1) (and (= (_ bv8560 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and .cse8 .cse0 .cse1) (and .cse3 .cse9 .cse1) (and .cse4 .cse7 .cse2) (and .cse3 .cse10 .cse1) (and .cse6 .cse2) (and .cse4 .cse10 .cse2) (and (= (_ bv8528 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse6 .cse9) (and .cse8 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32))) (and .cse3 .cse5 .cse1) (and (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0) (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv0 32))))) [2021-10-16 03:09:26,398 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:09:26,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:09:26 BoogieIcfgContainer [2021-10-16 03:09:26,427 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:09:26,428 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:09:26,428 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:09:26,428 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:09:26,429 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:08:13" (3/4) ... [2021-10-16 03:09:26,432 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 03:09:26,451 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-16 03:09:26,452 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 03:09:26,453 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 03:09:26,454 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 03:09:26,546 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 03:09:26,547 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:09:26,548 INFO L168 Benchmark]: Toolchain (without parser) took 74662.45 ms. Allocated memory was 73.4 MB in the beginning and 436.2 MB in the end (delta: 362.8 MB). Free memory was 56.7 MB in the beginning and 112.7 MB in the end (delta: -56.0 MB). Peak memory consumption was 306.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:09:26,549 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 73.4 MB. Free memory was 55.4 MB in the beginning and 55.3 MB in the end (delta: 60.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:09:26,549 INFO L168 Benchmark]: CACSL2BoogieTranslator took 542.12 ms. Allocated memory is still 73.4 MB. Free memory was 56.4 MB in the beginning and 54.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-10-16 03:09:26,550 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.22 ms. Allocated memory is still 73.4 MB. Free memory was 54.4 MB in the beginning and 51.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:09:26,550 INFO L168 Benchmark]: Boogie Preprocessor took 60.26 ms. Allocated memory is still 73.4 MB. Free memory was 51.7 MB in the beginning and 49.6 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:09:26,551 INFO L168 Benchmark]: RCFGBuilder took 979.65 ms. Allocated memory was 73.4 MB in the beginning and 94.4 MB in the end (delta: 21.0 MB). Free memory was 49.6 MB in the beginning and 66.8 MB in the end (delta: -17.2 MB). Peak memory consumption was 23.3 MB. Max. memory is 16.1 GB. [2021-10-16 03:09:26,551 INFO L168 Benchmark]: TraceAbstraction took 72895.25 ms. Allocated memory was 94.4 MB in the beginning and 436.2 MB in the end (delta: 341.8 MB). Free memory was 66.4 MB in the beginning and 122.1 MB in the end (delta: -55.8 MB). Peak memory consumption was 329.9 MB. Max. memory is 16.1 GB. [2021-10-16 03:09:26,552 INFO L168 Benchmark]: Witness Printer took 119.05 ms. Allocated memory is still 436.2 MB. Free memory was 122.1 MB in the beginning and 112.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:09:26,554 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 73.4 MB. Free memory was 55.4 MB in the beginning and 55.3 MB in the end (delta: 60.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 542.12 ms. Allocated memory is still 73.4 MB. Free memory was 56.4 MB in the beginning and 54.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.22 ms. Allocated memory is still 73.4 MB. Free memory was 54.4 MB in the beginning and 51.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.26 ms. Allocated memory is still 73.4 MB. Free memory was 51.7 MB in the beginning and 49.6 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 979.65 ms. Allocated memory was 73.4 MB in the beginning and 94.4 MB in the end (delta: 21.0 MB). Free memory was 49.6 MB in the beginning and 66.8 MB in the end (delta: -17.2 MB). Peak memory consumption was 23.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 72895.25 ms. Allocated memory was 94.4 MB in the beginning and 436.2 MB in the end (delta: 341.8 MB). Free memory was 66.4 MB in the beginning and 122.1 MB in the end (delta: -55.8 MB). Peak memory consumption was 329.9 MB. Max. memory is 16.1 GB. * Witness Printer took 119.05 ms. Allocated memory is still 436.2 MB. Free memory was 122.1 MB in the beginning and 112.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 673]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 140 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 72752.1ms, OverallIterations: 22, TraceHistogramMax: 16, EmptinessCheckTime: 168.8ms, AutomataDifference: 4631.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 2490.0ms, InitialAbstractionConstructionTime: 20.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4726 SDtfs, 1672 SDslu, 3363 SDs, 0 SdLazy, 2469 SolverSat, 524 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2294.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14166 GetRequests, 14133 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 113.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6019occurred in iteration=20, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1420.2ms AutomataMinimizationTime, 22 MinimizatonAttempts, 3196 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 29 LocationsWithAnnotation, 29 PreInvPairs, 284 NumberOfFragments, 1109 HoareAnnotationTreeSize, 29 FomulaSimplifications, 7145 FormulaSimplificationTreeSizeReduction, 656.8ms HoareSimplificationTime, 29 FomulaSimplificationsInter, 1147 FormulaSimplificationTreeSizeReductionInter, 1816.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 452.2ms SsaConstructionTime, 1877.1ms SatisfiabilityAnalysisTime, 29303.6ms InterpolantComputationTime, 7105 NumberOfCodeBlocks, 7105 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 14158 ConstructedInterpolants, 0 QuantifiedInterpolants, 19220 SizeOfPredicates, 9 NumberOfNonLiveVariables, 8455 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 52 InterpolantComputations, 40 PerfectInterpolantSequences, 51164/51476 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 176]: Loop Invariant Derived loop invariant: (((8576bv32 == s__s3__tmp__next_state___0 && !(8672bv32 == s__state)) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) - InvariantResult [Line: 125]: Loop Invariant Derived loop invariant: (!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(8640bv32 == s__state) - InvariantResult [Line: 167]: Loop Invariant Derived loop invariant: ((((3bv32 == blastFlag && 8448bv32 == s__state) && !(s__hit == 0bv32)) || ((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && 2bv32 == blastFlag)) || ((3bv32 == s__s3__tmp__next_state___0 && 3bv32 == blastFlag) && 8448bv32 == s__state)) || ((8448bv32 == s__state && !(s__hit == 0bv32)) && 2bv32 == blastFlag) - InvariantResult [Line: 194]: Loop Invariant Derived loop invariant: ((((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state))) || (((!(8672bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 128]: Loop Invariant Derived loop invariant: (((((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state))) || (((!(8672bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state))) || ((!(8672bv32 == s__state) && blastFlag == 0bv32) && !(8640bv32 == s__state)) - InvariantResult [Line: 206]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 397]: Loop Invariant Derived loop invariant: (((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || ((!(8672bv32 == s__state) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 155]: Loop Invariant Derived loop invariant: (((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || ((!(8672bv32 == s__state) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: (((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || ((!(8672bv32 == s__state) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 200]: Loop Invariant Derived loop invariant: (((!(s__hit == 0bv32) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) || ((3bv32 == blastFlag && !(s__hit == 0bv32)) && !(8640bv32 == s__state))) || ((3bv32 == blastFlag && !(s__s3__tmp__next_state___0 == 8640bv32)) && !(8640bv32 == s__state)) - InvariantResult [Line: 209]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: (((((((((((((((((((((8466bv32 == s__state && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag) || 3bv32 == s__state) || (!(s__hit == 0bv32) && 2bv32 == blastFlag)) || ((8576bv32 == s__s3__tmp__next_state___0 && 8576bv32 == s__state) && 2bv32 == blastFlag)) || ((!(4bv32 == blastFlag) && 8640bv32 == s__state) && !(s__hit == 0bv32))) || ((8656bv32 == s__state && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag)) || (8544bv32 == s__state && 2bv32 == blastFlag)) || (8512bv32 == s__state && 2bv32 == blastFlag)) || ((8672bv32 == s__state && 3bv32 == blastFlag) && !(s__s3__tmp__next_state___0 == 8640bv32))) || ((8576bv32 == s__s3__tmp__next_state___0 && 8592bv32 == s__state) && 2bv32 == blastFlag)) || (8560bv32 == s__state && 2bv32 == blastFlag)) || ((8496bv32 == s__state && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag)) || ((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && 2bv32 == blastFlag)) || ((!(4bv32 == blastFlag) && 8592bv32 == s__state) && !(s__hit == 0bv32))) || ((8576bv32 == s__s3__tmp__next_state___0 && 8608bv32 == s__state) && 2bv32 == blastFlag)) || (3bv32 == blastFlag && !(s__hit == 0bv32))) || ((!(4bv32 == blastFlag) && 8608bv32 == s__state) && !(s__hit == 0bv32))) || (8528bv32 == s__state && 2bv32 == blastFlag)) || ((3bv32 == s__s3__tmp__next_state___0 && 3bv32 == blastFlag) && 8448bv32 == s__state)) || (8496bv32 == s__state && blastFlag == 1bv32)) || ((8576bv32 == s__s3__tmp__next_state___0 && 8640bv32 == s__state) && 2bv32 == blastFlag) - InvariantResult [Line: 161]: Loop Invariant Derived loop invariant: (((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || ((!(8672bv32 == s__state) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 137]: Loop Invariant Derived loop invariant: (((((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state))) || ((!(8672bv32 == s__state) && blastFlag == 1bv32) && !(8640bv32 == s__state))) || (((!(8672bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 143]: Loop Invariant Derived loop invariant: (((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || ((!(8672bv32 == s__state) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((8466bv32 == s__state && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag) || 3bv32 == s__state) || (!(s__hit == 0bv32) && 2bv32 == blastFlag)) || ((8576bv32 == s__s3__tmp__next_state___0 && 8576bv32 == s__state) && 2bv32 == blastFlag)) || ((!(4bv32 == blastFlag) && 8640bv32 == s__state) && !(s__hit == 0bv32))) || ((8656bv32 == s__state && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag)) || (8544bv32 == s__state && 2bv32 == blastFlag)) || (8512bv32 == s__state && 2bv32 == blastFlag)) || ((8672bv32 == s__state && 3bv32 == blastFlag) && !(s__s3__tmp__next_state___0 == 8640bv32))) || ((8576bv32 == s__s3__tmp__next_state___0 && 8592bv32 == s__state) && 2bv32 == blastFlag)) || (8560bv32 == s__state && 2bv32 == blastFlag)) || ((8496bv32 == s__state && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag)) || ((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && 2bv32 == blastFlag)) || ((!(4bv32 == blastFlag) && 8592bv32 == s__state) && !(s__hit == 0bv32))) || ((8576bv32 == s__s3__tmp__next_state___0 && 8608bv32 == s__state) && 2bv32 == blastFlag)) || (3bv32 == blastFlag && !(s__hit == 0bv32))) || ((!(4bv32 == blastFlag) && 8608bv32 == s__state) && !(s__hit == 0bv32))) || (8528bv32 == s__state && 2bv32 == blastFlag)) || ((3bv32 == s__s3__tmp__next_state___0 && 3bv32 == blastFlag) && 8448bv32 == s__state)) || (8496bv32 == s__state && blastFlag == 1bv32)) || ((8576bv32 == s__s3__tmp__next_state___0 && 8640bv32 == s__state) && 2bv32 == blastFlag)) || (8464bv32 == s__state && blastFlag == 0bv32) - InvariantResult [Line: 104]: Loop Invariant Derived loop invariant: (((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 681]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 119]: Loop Invariant Derived loop invariant: (((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 387]: Loop Invariant Derived loop invariant: (((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || ((!(8672bv32 == s__state) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 107]: Loop Invariant Derived loop invariant: (((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 344]: Loop Invariant Derived loop invariant: (((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || ((!(8672bv32 == s__state) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 188]: Loop Invariant Derived loop invariant: ((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) || ((8640bv32 == s__state && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag) - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 170]: Loop Invariant Derived loop invariant: ((((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state))) || (((8576bv32 == s__s3__tmp__next_state___0 && !(8672bv32 == s__state)) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 182]: Loop Invariant Derived loop invariant: (((8576bv32 == s__s3__tmp__next_state___0 && !(8672bv32 == s__state)) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) RESULT: Ultimate proved your program to be correct! [2021-10-16 03:09:26,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c719ec-3dce-4c69-9227-ad8b31f1bad9/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...